HELP ASAP!! Identify the reflection of the figure with vertices P(−11,−13), Q(−17,19), and R(23,−27) across the x-axis.

P (−11, 13), Q (−17, −19), R (23, 27)
P (11, 13), Q (17, −19), R (−23, 27)
P (11, −13), Q (17, 19), R (−23, −27)
P (−13, −11), Q (19, −17), R (−27, 23)

Answers

Answer 1

Answer:

P' (−11, 13), Q' (−17, −19), R' (23, 27)

Step-by-step explanation:

When we reflect a point across the x-axis, we negate the y-coordinates to obtain the image points.

The mapping for the reflection across the x-axis is

[tex](x,y)\to (x,-y)[/tex]

The vertices of the given figure are;

P(−11,−13), Q(−17,19), and R(23,−27)

We apply the rule to obtain:

[tex]P(-11,-13)\to P'(-11,13)[/tex]

[tex]Q(-17,19)\to Q'(-17,-19)[/tex]

[tex]R(23,-27)\to R'(23,27)[/tex]

The correct option is P' (−11, 13), Q' (−17, −19), R' (23, 27)


Related Questions

16.
The circumference of a circle is 55/7.
What is the diameter of the circle?

(Hint: Circumference = xD)
*Use 22/7 for pie​

Answers

Answer:

D=5/2

Step-by-step explanation:

Circumference of a circle = πD where D is the diameter of the circle.

In the question Circumference is =55/7 and π provided =22/7

55/7 = (22/7)D

We multiply both sides with the reciprocal f 22/7

D = (55/7) (7/22)

D = 5/2

In a geometric sequence, the common ratio is -5. The sum of the first 3 terms is 147. What is the value of the first term of the sequence?

Answers

[tex]\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ \displaystyle S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=\textit{last term's}\\ \qquad position\\ a_1=\textit{first term}\\ r=\textit{common ratio} \end{cases} \\\\[-0.35em] ~\dotfill[/tex]

[tex]\bf \begin{cases} r=-5\\ n=3\\ S_3=147 \end{cases} \implies 147=a_1\left( \cfrac{1-(-5)^3}{1-(-5)} \right)\implies 147=a_1\left( \cfrac{1-(-125)}{1+5} \right) \\\\\\ 147=a_1\cdot \cfrac{126}{6}\implies 147=21a_1\implies \cfrac{147}{21}=a_1\implies 7=a_1[/tex]

The first term of the geometric sequence with a common ratio of -5 and the sum of the first 3 terms being 147 is 7.

The first term of a geometric sequence where the common ratio is -5 and the sum of the first 3 terms is 147. A geometric sequence is denoted by a, ax, ax2, ax3, ..., where 'a' is the first term and 'x' is the common ratio.

Given the common ratio (x) is -5, we can express the first three terms of this geometric sequence as:

First term: a

Second term: a(-5) = -5a

Third term: a(-5)2 = 25a

The sum of these three terms equals 147:

a - 5a + 25a = 147

Combining like terms we get:

21a = 147

Now, dividing both sides by 21 to isolate 'a', we find:

a = 7

Therefore, the value of the first term of the sequence is 7.

A robot's height is 1 meter 20 centimeters. how tall is the robot in millimeters?

Answers

Answer: The height of the robot is 200 millimeters

Step-by-step explanation:

Answer:

It is 1,200

Step-by-step explanation:

Myron put $5000 in a 2-year CD playing 3% interest, compounded monthly. After 2 years, he withrew all his money. What was the amount of the withdrawal?

Answers

Answer:

  $5308.79

Step-by-step explanation:

The future value can be computed from ...

  FV = P(1 +r/n)^(nt)

where P is the principal invested, r is the annual interest rate, n is the number of times per year it is compounded, and t is the number of years.

Filling in the given numbers, we have ...

  FV = $5000(1 +.03/12)^(12·2) ≈ $5308.79

Myron's withdrawal will be in the amount of $5308.79.

Find the distance between the points (– 4, 7, – 3) and (4, – 1, – 2).

Answers

Answer:

√129

Step-by-step explanation:

The distance formula between two points is:

d² = (x₂ − x₁)² + (y₂ − y₁)² + (z₂ − z₁)²

Plugging in:

d² = (4 − (-4))² + (-1 − 7)² + (-2 − (-3))²

d² = 8² + 8² + 1²

d² = 129

d = √129

Let set A = {odd numbers between 0 and 100} and set B = {numbers between 50 and 150 that are evenly divisible by 5}. What is A ∩ B?

Answers

[tex]A=\{1,3,5,\ldots,99\}\\B=\{50,55,\ldots,150\}\\\\A\cap B=\{55,65,75,85,95\}[/tex]

Answer:

[tex]A\bigcap B=\left \{ 55,65,75,85,95 \right \}[/tex]

Step-by-step explanation:

Set A contains odd numbers between 0 and 100.

So, the elements in set A are as, Set A[tex]=\left \{ 1,3,5,7,9,11,13,15,...99 \right \}[/tex]

Set B contains the numbers between 50 and 150, that are evenly divisible by 5.

So, the elements in set B are are as, Set B

[tex]=\left \{ 55,60,65,70,75,80,85,90,... 145\right \}[/tex]

Now, we need to find [tex]A\bigcap B[/tex]

To find  [tex]A\bigcap B[/tex] , we need to find the common elements in Set A and Set B.

The common elements in Set A and Set B is [tex]\left \{  55,65,75,85,95 \right \}[/tex]

So, [tex]A\bigcap B=\left \{ 55,65,75,85,95 \right \}[/tex]

HELP PLZZ will give brainliest <3

Given the measures a = 10, b = 40, and
A = 30°, how many triangles can possibly be formed?

Given the measures b = 10, c = 8.9, and
B = 63°, how many triangles can possibly be formed?

Answers

Answer:

0

1

Step-by-step explanation:

First question:

You are given a side, a, and its opposite angle, A. You are also given side b. Use that in the law of sines and solve for the other angle, B.

[tex] \dfrac{a}{\sin A} = \dfrac{b}{\sin B} [/tex]

[tex] \dfrac{10}{\sin 30^\circ} = \dfrac{40}{\sin B} [/tex]

[tex] \dfrac{1}{0.5} = \dfrac{4}{\sin B} [/tex]

[tex] \sin B = 2 [/tex]

The sine function can never equal 2, so there is no triangle in this case.

Answer: no triangle

Second question:

You are given a side, b, and its opposite angle, B. You are also given side c. Use that in the law of sines and solve for the other angle, C.

[tex] \dfrac{b}{\sin B} = \dfrac{c}{\sin C} [/tex]

[tex] \dfrac{10}{\sin 63^\circ} = \dfrac{}{\sin C} [/tex]

[tex] \sin C = \dfrac{8.9\sin 63^\circ}{10} [/tex]

[tex] C = \sin^{-1} \dfrac{8.9\sin 63^\circ}{10} [/tex]

[tex] C \approx 52.5^\circ [/tex]

One triangle exists for sure. Now we see if there is a second one.

Now we look at the supplement of angle C.

m<C = 52.5°

supplement of angle C: m<C' = 180° - 52.5° = 127.5°

We add the measures of angles B and the supplement of angle C:

m<B + m<C' = 63° + 127.5° = 190.5°

Since the sum of the measures of these two angles is already more than 180°, the supplement of angle C cannot be an angle of the triangle.

Answer: one triangle

Final answer:

In the first case with measures a=10, b=40, A=30°, no triangle can be formed as a is smaller than b sin(A). In the second case with measures b=10, c=8.9, B=63°, one triangle can be formed because b is greater than c.

Explanation:

In the context of the Ambiguous Case of the Law of Sines, we can find the number of triangles formed given the measures. For the first case, a = 10, b = 40, and A = 30°, no triangle can be formed because a is less than b sin(A), which means the given side (a) is too short to reach the other side (b).

For the second case, b = 10, c = 8.9, and B = 63°, one triangle can be formed. Here, b is greater than c and therefore capable of forming one valid triangle as per the Ambiguous Case of the Law of Sines.

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TIMING TEST!!!!!!!!!!!!!!!!!!


The graph of f(x) = |x| is reflected across the x-axis and translated to the right 6 units. Which statement about the domain and range of each function is correct?


a)Both the domain and range of the transformed function are the same as those of the parent function.

b) Neither the domain nor the range of the transformed function are the same as those of the parent function.

c)The range but not the domain of the transformed function is the same as that of the parent function.

d)The domain but not the range of the transformed function is the same as that of the parent function

Answers

Answer:

Domain is 2 and range is 4

Step-by-step explanation:

please help lolol

Name the following segment or point.

Given:
L, M, N are midpoints



centroid of triangle ABC

P
Q
R

Answers

Answer:

  Q

Step-by-step explanation:

Each line from a vertex to the midpoint of the opposite side is called a median. The point where the medians intersect, point Q, is the centroid.

The centroid of ΔABC is point Q.

Answer:

Q

Step-by-step explanation:

We are given that L,M and N are midpoints of sides AC,AB and BC of a triangle.

We have to find the centroid of triangle ABC.

Centroid of triangle : It is defined as the intersection point of medians of triangle.

Medians of triangle ABC are BL,CN and  AM.

Medians BL, CN and AM are intersect at point Q.

Therefore, centroid of triangle ABC is Q by definition of centroid of triangle.

Answer:Q

You have reason to believe that there are actually

more raisins in each box than the company

claims. What is Your alternative hypothesis?

Answers

Answer:

The answer is A.) u < 200

next one is B.) u > 200

The alternative hypothesis in your testing would be: u < 20; u > 200.

What is Alternative Hypothesis?

An alternative hypothesis can be defined as a statement in statistical inference which is used in contradictory form against what is stated in the null hypothesis.

Alternative hypothesis is the alternative t a null hypothesis in hypothesis testing.

Therefore, the alternative hypothesis in your testing would be: u < 20; u > 200.

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the values in the table represent an exponential function.what is the common ratio of the associated geometric sequence
x y
1 8
2 32
3 128
4 512
5 2048


A.4 B.24 C.40 D.8

Answers

Answer:

  A.  4

Step-by-step explanation:

Pick two terms with consecutive x-values and find their ratio. That is the common ratio.

 for x = 2 and x = 1,

 r = 32/8 = 4

The common ratio is 4.

_____

You can check other pairs of terms if you want to confirm.

  r = 2048/512 = 4 . . . . for x=5 and 4.

Answer:

Hi!

The correct answer is A. 4.

Step-by-step explanation:

To find the common ratio of an geometric sequence of set A = {a₁, a₂, a₃, ..., aₙ} you can use the formula:

[tex]r=\frac{a_{i+1}}{a_i}[/tex]

If you pick x = 4 to find the ratio, you have to replace in the formula:

[tex]r=\frac{a_{4+1}}{a_4} =\frac{a_{5}}{a_4}[/tex] // replace the values

[tex]r= \frac{2048}{512} = 4[/tex]

The common ratio of this geometric sequence is 4.

Given the following linear function, sketch the graph of the function and find the domain and range.


f(x) = 2/3x - 3

Answers

1. To sketch the function f(x) = (2/3)x - 3, we first need to find two points that we can later join to sketch the line, for example the x- and y-intercepts.

a) The x-intercept occurs when f(x) = 0, so if f(x) = 0, then:

f(x) = (2/3)x - 3

0 = (2/3)x - 3

3 = (2/3)x (Add three to both sides)

3*(3/2) = x (Multiply both sides by 3/2)

9/2 = x

We have now found the x-intercept at (9/2, 0)

b) The y-intercept occurs when x = 0, so:

f(x) = (2/3)x - 3

f(0) = (2/3)*0 - 3

f(0) = -3

Now we know that the y-intercept is at (0, -3)

c) All that's left is to sketch the graph axes and label them, plot the two points, join them together using a ruler and label their coordinates.

2. The Domain is the range of x-values for which the function exists, and the Range is the range of y-values for which the function exists.

Since there haven't been any constraints specified, we can say that both the Domain and Range are (-∞, ∞), since the graph continues forever both along the x- and y-axis.

(Note that this isn't always the case and would change if, for example, the question stipulated that there was a domain of [0, 5] and you had to find the range. Then, you would calculate the value of y at each end of the domain (if x = 0, y = -3 and if x = 5, y = 1/3) - in my example, the range would thus be [-3, 1/3].)

What is the surface area of a cube that has a side length of 8 mm? Use the formula is SA=6^2, where SA is the surface area of the cube and s is the length of each side.
48mm^2
96mm^2
384mm^2
2,304mm^2

Answers

Answer:

The surface area is [tex]SA=384\ mm^{2}[/tex]

Step-by-step explanation:

we know that

The surface area of the cube is equal to

[tex]SA=6s^{2}[/tex]

we have

[tex]s=8\ mm[/tex]

substitute

[tex]SA=6(8)^{2}[/tex]

[tex]SA=384\ mm^{2}[/tex]

What is the shape of the cross section of the cylinder in each situation?



Drag and drop the answer into the box to match each situation.

Answers

Answer: The first box is circle and second box is rectangle.

Step-by-step explanation:

If you are asking about the shape of the cross section for a right circular cylinder, that is the case. A parabola or triangle can't be sliced so the cross section is parallel or perpendicular to the base.

If the cross section is parallel to the base, it is a circle.

If the cross section is perpendicular to the base, it is a rectangle.

PLEASE HELP ME WITH THIS MATH QUESTION

Answers

Answer: 24%

Step-by-step explanation:

2610+8120 = The undergraduates and graduates combined.

That is 10730. You are figuring out the probability the student is a graduate when those two graduates are combined, because that is all the data given. So you would do 2610/10730 in your calculator, resulting in 24.324324324%. As it says rounded to the nearest percent in parentheses, it has to round to the whole number, 24%, and .3 rounds down.

A poll is given, showing 65% are in favor of a new building project. If 4 people are chosen at random, what is the probability that exactly 3 of them favor the new building project? Preview

Answers

Answer:

0.38

Explanation:

When 4 people are chosen at random, the probability that exactly 3 of them favor the new building project may be thought as four cases:

- the first one is against and the other three are in favor

- the second one is against and the other three are in favor

- the third one is against and the other three are in favor

- the fourth one is against and the other three are in favor.

Each one of those probabilities are equal to:

(0.35)         ×      (0.65)³ = 0.09611875

          ↑                          ↑

      one against          three in favor

Since, there are four equal results: 4 × 0.09611875 = 0.384475

Rounded to 2 significant digits that is 0.38.

Final answer:

The probability that exactly 3 out of 4 people randomly selected from a poll, where 65% of people are in favor of a certain building project, are also in favor of it is approximately 0.3835 or 38.35%.

Explanation:

This question is about the calculation of probability related to a poll result. To calculate the probability that exactly 3 of 4 randomly chosen people favor the new building project, we should consider this as a binomial probability problem, because each person either supports the project or not, and each person is independent of the others. Accordingly, the probability that exactly 3 out of 4 people are in favor is given by the formula:

P(X=3)=C(4,3)*(0.65)^3*(1-0.65)^(4-3)=4*(0.65)^3*(0.35)=(4*0.2746*0.35)=0.3835

So, the probability that exactly 3 of them favor the new building project is approximately 0.3835 or 38.35%.

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A museum is building a scale model of Sue, the largest Tyrannosaurus rex skeleton ever found. Sue was 13 feet tall and 40 feet long, and her skull had a length of 5 feet. If the length of the museum's scale model skull is 3 feet, 1.5 inches, what is the difference between the scale model's length and its height?

A) 8 feet, 1.5 inches
B) 16 feet, 10.5 inches
C) 22 feet, 6.5 inches
D) 27 feet, 4 inches

Answers

Answer:

B) 16 ft, 10.5 in

Step-by-step explanation:

There are a few different ways you can work this. Since we want to know the difference between length and heigh of the model and we are given skull length of the model, it makes a certain amount of sense to find the corresponding measurements of the actual skeleton.

The actual skeleton's length was 40 ft and its height was 13 ft, so the difference between these dimensions is ...

40 ft - 13 ft = 27 ft

The actual skull is 5 ft long, so the difference is ...

(27 ft)/(5 ft) = 5.4

times the length of the skull.

The same ratio will apply to the model, so the difference between the model height and model length is 5.4 times the length of the model skull:

desired difference = 5.4 × 3 ft 1.5 in = 16.2 ft + 8.1 in

= 16 ft 10.5 in

Need help with math question

Answers

Answer:

(-7,4)

Step-by-step explanation:

goal: (y-k)^2=4p(x-h)

y^2-8y=4x+12    Rearranged and added 4x and 12 on both sides

y^2-8y+(-8/2)^2=4x+12+(-8/2)^2 complete square time (add same thing on both sides)

y^2-8y+(-4)^2=4x+12+(-4)^2 (simplify inside the squares)

(y-4)^2=4x+12+16  (now write the left hand side as a square)

(y-4)^2=4x+28

(y-4)^2=4(x+7)    factored...

vertex is (-7,4)

Answer:

(-7,4)

Step-by-step explanation:

Morena, a scuba diver, used the expression below to describe her position in relation to sea level. 0 + (–15) + 6 Which statement could describe the diver's movements? Morena started at 15 feet below sea level, then dove down 6 more feet. Morena started at 15 feet above sea level, then dove down 6 more feet. Morena started at sea level, dove down 15 feet, then dove down 6 more feet. Morena started at sea level, dove down 15 feet, then rose up 6 feet.

Answers

Answer:

mirena started at sea level, dove down 15 feet then rose up 6 feet

Step-by-step explanation:

she starts at zero the goes up -15 feef and then up 6 feet

Answer:

Morena started at sea level, dove down 15 feet, then rose up 6 feet.

Step-by-step explanation:

The expression is composed by three values. The first value indicates the starting point; which is 0, meaning sea level. The second component is -15, this indicates that Morena dove 15 feet below sea level, so she dove down. The third component is 6, this indicate that she drove up 6 feet, so she rose up. The position of Morena should be at 9 feet below sea level. The equation should be:

X = 0 + (-15) + 6

X = 0 - 15 + 6

X = -15 + 6

X = -9 down sea level

X means the Morena's postion

Tara is planning a baby shower for her sister. The restaurant charges $450 for the first 25 people plus $15 for each additional guest If Tara can spend at most $700, find the greatest number of people who can attend the shower.

Answers

700-450=250
250/15=16.67
25+16=41 guests

Answer with Step-by-step explanation:

Tara can spend at most $700

Restaurant charges $450 for the first 25 people and  $15 for each additional guest

Let x be the number of additional guest

⇒ 450+15x<700

⇒ 15x<250

⇒ x<250/15

⇒ x<16.67

Hence, Maximum additional guest can be 16

25+16=41

Hence,  the greatest number of people who can attend the shower is:

41

PLEAS HELP ME FIND THE AREA OF THE SHADED SECTOR

Answers

ANSWER

461.7 yd²

EXPLANATION

The shaded region represents a sector.

The area of the sector is a fraction of the area of the whole circle.

Area of sector

[tex] = \frac{angle \: \: of \:sector }{360 \degree} \times \pi {r}^{2} [/tex]

We substitute the angle of the sector and the radius of the circle to obtain:

[tex] = \frac{167 \degree}{360 \degree} \times \pi \times {17.8}^{2} [/tex]

[tex] = 461.7 {yd}^{2} [/tex]

Therefore the area of the shaded region to the nearest tenth is 461.7 square yards.

Answer:

Area of shaded sector = 461.5 yd²

Step-by-step explanation:

Points to remember

Area of circle = πr²

Where 'r' is the radius of circle

To find the area of given circle

Here r = 17.8 yd

Area = πr²

 = 3.14 * 17.8²

 = 3.14 * 316.84

 = 994.8776 yd²

To find the area of shaded region

Central angle of sector = 167°

Area of sector = (167/360) * area of circle

 =  (167/360) *994.8776

 = 461.52 ≈ 461.5 yd²

NEED HELP WITH A MATH QUESTION

Answers

Answer:

56.3 cm

Step-by-step explanation:

(sinA)/(27) = (sinC)/c

(sin28°)/(27) = (sin102°)/c

For this case we have that by definition, the sum of the internal angles of a triangle is 180 degrees.

Then we look for the measure of the third angle:

[tex]102 + 28 + x = 180\\x = 180-102-28\\x = 50[/tex]

According to the Law of sines:

[tex]\frac {sin (50)} {a} = \frac {Sin (28)} {27}\\a = \frac {27 * sin (50)} {sin (28)}\\a = \frac {0.76604444 * 27} {0.46947156}\\a = 44.06[/tex]

Answer:

[tex]a = 44.1[/tex]

a train has 1 first class carriage and 6 standard carriages.

the first class carriage has 64 seats, 3/8 are being used.

each standard carriage has 78 seats, 7/13 are being used.

Are more than half the seats on the train being used?

Answers

Answer:

  Yes

Step-by-step explanation:

(3/8)·64 = 24 seats in the first class carriage are being used.

(7/13)·(78)·3 = 126 seats in the standard carriages are being used, for a total of ...

  24 + 126 = 150 . . . occupied seats

The number of available seats is ...

  64 +3·78 = 298

so half the seats on the train will be 298/2 = 149 seats.

  150 > 149, so more than half the seats on the train are being used.

The quadratic model f(x) = –5x2 + 200 represents the approximate height, in meters, of a ball x seconds after being dropped. The ball is 50 meters from the ground after about how many seconds? 2.45 3.16 5.48 7.07

Answers

Answer:

t = 5.48

Step-by-step explanation:

f(x) = -5x² + 200

given f(t) = 50 when x = time(t)

Hence,

50 = -5t² + 200

5t² = 200 - 50

5t² = 150

t² = 30

t = √30 = 5.48

The number of seconds are 5.48, the correct option is C.

What is a quadratic equation?

A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is  ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

We are given that;

f(x) = –5x2 + 200

Now,

To find the time when the ball is 50 meters from the ground, we need to solve the equation:

f(x) = 50

Substituting f(x) with -5x^2 + 200 and simplifying, we get:

-5x^2 + 200 = 50

-5x^2 = -150

x^2 = 30

x = ±√30

Since x represents time, we only consider the positive value of x. Therefore,

x ≈ 5.48

Therefore, by the quadratic equations the answer will be 5.48

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What is the missing constant term in the perfect square that starts with x^2+2x

Answers

Answer:

  1

Step-by-step explanation:

The constant term in a perfect square trinomial with leading coefficient 1 is the square of half the coefficient of the linear term.

  (2/2)² = 1

The missing constant term is 1.

Answer:  The correct answer is:  " 1 " .

_____________________________________________________

                               →   "  x²  +  2x  +    1     =   (x + 1)²  " .

_____________________________________________________

_____________________________________________________

Step-by-step explanation:

_____________________________________________________

Let us assume that the question asks us to solve for the "missing constant term in the following equation:  

      →   " x² + 2x + b = 0 " ;  

      →  in which:  " b " is the "missing constant term" for which we shall solve.

_____________________________________________________

The form of an equation in the perfect square would be:

                →  (x + b) ² =  x² + 2bx + b²  ;

                →  In our case, "b" ; refer to the "missing constant term" for which we shall solve.

_____________________________________________________

      →   " x² + 2x + b = 0 " ;  

       Note that the term in the equation with the highest degree (highest exponent) is:  

            →  " " ;  with an "implied coefficient" of: " 1 " (one) ;

      →   {since "any value" , multiplied by " 1 " , results in that same initial value.}.

      →   Since the term with the highest degree has a "co-efficient" of " 1 " ;

  we can solve the problem;   i.e. "Solve for "b" ;  accordingly:

_____________________________________________________

      →   " x² + 2x + b = 0 " ;

Subtract "b" from each side of the equation:

      →   " x² + 2x + b - b = 0 - b " ;

      →  to get:

      →   x² + 2x  =  - b

Now we want to complete x² + 2x into a perfect square.

To do so, we take the:  "2" (from the:  "+2x" );  

     →  and we divide that value {in our case, "2"};  by "2" ;

to get:  "[2/2]" ;  and then we "square" that value;

     →  to get:  " [2/2]² " .

_____________________________________________________

Now, we add this "squared value" to:  " x² + 2x " ;  as follows:

     →  " x² + 2x + [2/2]² " ;  and simply:  " [2/2]² = [1]² = 1 ."

_____________________________________________________

     x² + 2x + (2/2)² = x² + 2x + 1 ;

                              =  (x + 1)² ;

_____________________________________________________

Now:  " x² + 2x = - b " ;

 We add "(2/2)² " ;  to each side of the equation;

 →  In our case,  " [2/2]² = [1]² = 1 " ;

 →  As such, we add:  " 1 " ;  to each side of the equation:

              →   x² + 2x + (2/2)² =  - b + (2/2)² ;

              →  Rewrite;  substituting " 1 " [for:  " (2/2)² "] :

              →   x² + 2x + 1  =  1 - b ;                                          

              →   x² + 2x + 1   = 1 - b ;

_____________________________________________________

And assume "b" would equal "1" ;

 since assuming the question refers to the equation:

     "x²  +  2x  ±   b = 0 " ;  solve for "b" ;  

And:   "b = 1 " ;

Then:  " x² + 2x + 1 = ?  1 - b  ??

       →  then:   " 1 - b = 0 "  ;  Solve for "b" ;

       →  Add "b" to each side of the equation:

                      " 1 - b + b = 0 + b " ;

       →  to get:  " 1 = b "  ;   " b =  1 "  ;  Yes!

___________________________________________________

Also, to check our work:

_____________________________________________________

Remember, from above:

_____________________________________________________  

" The form of an equation in the perfect square would be:

                →  (x + b)²  =  x²  +  2bx + b² " ;  _____________________________________________________

   →  Let us substitute "1" for all values of "b" :

                  →   "  (x + 1) ²  =   x² + 2*(b)*(1)  +   1²  "  ;

                  →   "  (x + 1)²   =   x²  +  (2*1*1)   +  (1*1) "  ;

                  →   "  (x + 1)²   = ?  x²  +  2  +  1 "  ?? ;  Yes!

                  →  However, let us check for sure!

 _____________________________________________________

→   Expand:  " (x + 1)²  " ;  

→  " (x + 1)² = (x + 1)(x + 1) " ;

_____________________________________________________

   →  " (x + 1)(x + 1) " ;  

_____________________________________________________

Note the following property of multiplication:

_____________________________________________________

 →   " (a + b)(c + d)  =  ac  +  ad  +  bc  +  bd " ;

_____________________________________________________

As such:

_____________________________________________________

         →  " (x + 1)(x + 1) " ;

              =  (x*x) + (1x) + (1x) + (1*1) ;

              =  x²  +  1x + 1x + 1 ;

        →  Combine the "like terms" :

              + 1x + 1x = + 2x ;  

And rewrite:

              =   x²  +  2x + 1 .

_____________________________________________________

"  (x + 1)²   = ?  x²  +  2  +  1 "  ?? ;  Yes!

_____________________________________________________

    →   So:  The answer is:  " 1 " .

_____________________________________________________

   →  " x² + 2x +  1    =  (x + 1)²  " .

_____________________________________________________

Hope this answer helped!

    Best wishes to you in your academic endeavors

            — and within the "Brainly" community!

_____________________________________________________

A customer's stock value seems to be rising exponentially. The equation for
the linearized regression line that models this situation is log(y) = 0.30X +0.296
where x represents number of weeks. Which of the following is the best
approximation of the number of weeks that will pass before the value of the
stock reaches $600?

Answers

Hello!

The answer is:

The correct option is A. 8.3.

Why?

To calculate the number of weeks that will pass, we need to use the given information.From the statement we know that we need to use the value of $600 substituting it as "y", and then, isolate "x", so, calculating we have:

[tex]log(y)=0.30x+0.296\\\\log(600)=0.30x+0.296\\\\2.78=0.30x+0.296\\\\2.78-0.296=0.30x\\\\x=\frac{2.78-0.296}{0.30}=8.28=8.3[/tex]

Hence, the correct option is A. 8.3.

Have a nice day!

Which mathematicians first used the symbol pi Why?

Answers

Answer:

William Jones

Step-by-step explanation:

The number pi (π) is a platonic concept and has been used for 4000 years. The number pi can be approached but never reached. In general, this number means the constant ratio of the circumference to the diameter of any circle. Ancient Babylonians, Egyptians, and even Archimedes, one of the greatest mathematicians of the ancient world tried to approximate the value of pi, but in the 1700s, mathematicians began using the Greek letter π that was introduced by William Jones, in his second book Synopsis Palmariorum Matheseos or A New Introduction to the Mathematics base. Then, this symbol was popularized and adopted in 1737 by the greatest mathematician Leonhard Euler.

Find the derivative of f(x) = 12x2 + 8x at x = 9.
256
-243
288
224
I answer questions for you but no one ever answers my questions. You're all are so ungrateful. I've been trying to find the answer for several hours and nothing. Yes I did try to teach myself but I just cant understand it.

Answers

Answer:

It's 224.

Step-by-step explanation:

We use the power rule for a derivative.

If f(x) = ax^n then the derivative  f'(x) = anx^(n-1).

So the derivative of 12x^2 + 8x

= 2*12 x^(2-1) + 8x^(1-1)

= 24x + 8x^0

= 24x + 8.

When x = 9 the derivative = 24(9) + 8

=  224.

The value of first order derivative with x=9 is 224. Therefore, option D is the correct answer.

What is the differentiation?

The process of finding derivatives of a function is called differentiation in calculus. A derivative is the rate of change of a function with respect to another quantity.

The given function is f(x)=12x²+8x at x=9.

Here, first order derivative is

f'(x)=24x+8

= 24×9+8

= 224

Therefore, option D is the correct answer.

To learn more about the differentiation of an equations visit:

https://brainly.com/question/25731911.

#SPJ3

What is the solution for the system of equations {9x+8y=3 6x−12y=−11?

Answers

Answer:

( - [tex]\frac{1}{3}[/tex], [tex]\frac{3}{4}[/tex] )

Step-by-step explanation:

Given the 2 equations

9x + 8y = 3 → (1)

6x - 12y = - 11 → (2)

To eliminate the y- term multiply (1) by 1.5

13.5x + 12y = 4.5 → (3)

Add (2) and (3) term by term

(6x + 13.5x) + (- 12y + 12y) = (- 11 + 4.5)

19.5x = - 6.5 ( divide both sides by 19.5 )

x = [tex]\frac{-6.5}{19.5}[/tex] = - [tex]\frac{1}{3}[/tex]

Substitute this value into either of the 2 equations and solve for y

Using (1), then

- 3 + 8y = 3 ( add 3 to both sides )

8y = 6 ( divide both sides by 8 )

y = [tex]\frac{6}{8}[/tex] = [tex]\frac{3}{4}[/tex]

Solution is (- [tex]\frac{1}{3}[/tex], [tex]\frac{3}{4}[/tex] )

Solve the equation. 2(4 - 2x) - 3 = 5(2x + 3)

A. 3/5
B. 2/3
C. 3/2
D. 7/2

Answers

Answer:

x= -5/7

Step-by-step explanation:

The equation involves only one variable x.

so, we have to isolate the variable to get the solution of the equation

Given

[tex]2(4 - 2x) - 3 = 5(2x + 3)\\8-4x -3 = 10x+15\\5-4x = 10x+15\\-4x = 10x +15 -5\\-4x-10x=10\\-14x = 10\\x = \frac{10}{-14}\\ x = -\frac{x=5}{7}[/tex]

Hence the value of x or solution is

x= -5/7

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