Simplify the expression (-7)2.

Answer:

5x+y=-3

Step-by-step explanation:

Answer:

Step-by-step explanation:

y = 5x - 3   it's a slope-intercept form

y = 5x - 3         subtract 5x from both sides

-5x + y = -3          change the signs

5x - y = 3     it's a standard form

5x - y = 3          subtract 3 from both sides

5x - y - 3 = 0         it's a general form

Answer: 1 Triangle weighs as much as 2 marbles.

Step-by-step explanation: Since we know there balanced, we can figure out using equations whatever we do to the first side so to the other.

The student's question relates to the point P with the polar coordinates (3, -π/3). Polar coordinates are not unique, so we can find all coordinates of point P by adding multiples of 2π to the angle part of the coordinate, that is, (3, -π/3 + 2πn) where n is an integer.

The polar coordinates system is a two-dimensional coordinate system in which each point on a plane is determined by a distance from the origin (point O) and an angle measured anti-clockwise from an arbitrary direction, usually the x-axis.

Each point is represented by the ordered pair (r, θ). Our point P has the polar coordinates (3, -π/3). However, polar coordinates are not unique for a given point. To find all polar coordinate pairs for point P, we add multiples of 2π to the angle part of the coordinate pair, as a complete revolution is 2π in radians. Therefore, alternative polar coordinate pairs for point P would include (3, -π/3 + 2πn) where n is an integer.

Examples include:

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Answer:

no

Step-by-step explanation:

the first 7, 7000, is 1000 times greater than the first 7. If the first seven is the one in the ones value and the second is in the 7, than it it 1000 smaller.

The value of the first 7 is a thousand times as great as the value of the second 7 in 7,027.

Place value is the basis of our entire number system. This is the system in which the position of a digit in a number determines its value.

Given, a number 7,027 that has two 7 we need to compare the values of 7 in the form of place values.

thus,

Place value of first seven (right to left) = 1

Place value of 2 = 10

place value of 0 = 100

place value of second 7(right to left) = 1000

the first 7 or 7000, is 1000 times greater than the first 7. If the first seven is the one in the one's value and the second is in the 7, then it is 1000 times smaller.

therefore, The first 7's value is 1,000 times more than the second 7's value of 7,027.

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Answer:

45°

Step-by-step explanation:

Each corner of a square is a right angle. That is 90° which divided by 2 equals 45°

Answer:

I think it's B.

Step-by-step explanation:

Because the equation is 1 - 0.144/24 should represent the amount of emails to be answered after one day.

Answer:

D. The decay rate, which reveals the hourly rate of change in the number of customers whose subscriptions are due to be renewed.

Step-by-step explanation:

An exponential decay function is,

[tex]f(x)=a(1-r)^x[/tex]

Where, a is initial value,

r is rate of change per period,

x is the number of periods,

(1-r) is decay factor that shows the periodic rate of change in the initial value.

Given expression that represents the number of such customers after n days is,

[tex]15,000(1-\frac{0.144}{24})^{24n}[/tex]

By comparing,

15,000 is the initial number of customers who are due to be renewed,

[tex]\frac{0.144}{24}[/tex] is the change per hour in the number of customers,

24n is the total number of hours,

[tex](1-\frac{0.144}{24})[/tex] is the decay factor or decay rate that reveals the hourly rate of change in the number of customers,

Hence, option 'D' is correct.

Answer:

1) vertex = (-2,4)

2) Focus = (-0.5,4)

3) x= -3.5

   y= 4

4)  y=4

Step-by-step explanation:

General equation of parabola that is parallel to a-axis and vertex at (h,k) is given as

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

where

vertex of parabola is at (h,k)

focus of parabola is given at (h + p, k)

the directrix of parabola is given as x = h - p.

Now

1)

finding vertex of parabola:

Given equation of parabola

(y-4)^2=6(x+2)

Comparing with the general form, we get

h=-2 ,k=4 and 4p=6

hence vertex = (-2,4)

2)

Finding focus

Comparing with the above standard form we get

k=4, h=-2, p=3/2

Since the given parabola is parallel to x-axis and also p is positive hence it will opens to the right.

As focus is inside the parabola and it is p units to the right of the vertex:

hence

focus of parabola (h + p, k)=(-2+3/2 , 4)

                                            =(-0.5,4)

3)

Comparing with the above standard form we get

k=4, h=-2, p=3/2

Since the given parabola is parallel to x-axis and also p is positive hence it will opens to the right.

As directrix is outside the parabola and it is p units to the left of the vertex:

hence

directrix x=h-p

                = -2-3/2

                =-7/2

                = -3.5

             y= 4

4)

Finding Axis of symmetry:

as the vertex is (-2,4) also the given parabola is parallel to x-axis so

the axis of symmetry is a horizontal straight line passing through the vertex  at y=4 !

For this case we have that by definition, the equation of a line in the slope-intersection form is given by:

[tex]y = mx + b[/tex]

Where:

m: It's the slope

b: It is the cut point with the "y" axis

[tex]m = \frac {y2-y1} {x2-x1}[/tex]

Then, we have the points:

[tex](x1, y1): (- 6, -3)\\(x2, y2) :( 6, -7)[/tex]

Substituting:

[tex]m = \frac {-7 - (- 3)} {6 - (- 6)}\\m = \frac {-7 + 3} {6 + 6}\\m = \frac {-4} {12}\\m = - \frac {1} {3}[/tex]

Thus, the equation is:

[tex]y = - \frac {1} {3} x + b[/tex]

We substitute a point to find the cut point:

[tex]-7 = - \frac {1} {3} (6) + b\\-7 = -2 + b\\b = -7 + 2\\b = -5[/tex]

Finally the equation is:

[tex]y = - \frac {1} {3} x-5[/tex]

ANswer:

[tex]y = - \frac {1} {3} x-5[/tex]

In the equation: -6x - 19 - 4x replace x with -2

-6(-2) - 19 - 4(-2)

Use your rules of PEMDAS to evaluate

12 - 19 + 8

-7 + 8

1

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer

1

Step-by-step explanation:

Step 1: Replace all x's with -2

-6(-2)-19-4(-2)

Step 2: Multiply

12-19+8

Tip: Remember that a double negative is a positive.

Step 3: Add and Subtract

12-19+8

-7 + 8

1

Answer:

distribution of numerical data. It is an estimate of the probability distribution of a continuous variable it is different then a bar graph

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

2k - 1 is linear, so this is an arithmetic series.  The sum of an arithmetic series is:

S = (n/2) (a₁ + an)

Here:

S = 196

a₁ = 2(1) - 1 = 1

an = 2n - 1

Solving:

196 = (n/2) (1 + 2n - 1)

196 = (n/2) (2n)

196 = n²

n = 14

[tex]\bf ~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ (\stackrel{x_1}{5}~,~\stackrel{y_1}{6})\qquad (\stackrel{x_2}{8}~,~\stackrel{y_2}{2}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{8+5}{2}~~,~~\cfrac{2+6}{2} \right)\implies \left( \cfrac{13}{2}~,~\cfrac{8}{2} \right)\implies \left(6\frac{1}{2}~,~4 \right)[/tex]

If you have 1 nickle, how many quarters do you have? (3)

If you have 4 nickles, you have 3 times as many quarters (3)(4) = 12

If you have n nickles, then you have 3n quarters so 3n = q, you have  a slightly different equation.

If you fix this equation and use substitution like you did, you can get the right answer; you can also try to work in the other information that you have - converting all coin values to cents

    5n + 10d + 25q = 460

This problem can be solved by setting up and solving a system of linear equations. After setting up the equations n+d+q=30, 5n+10d+25q=460, and d=q+2, you substitute and simplify to find that there are 10 nickels, 12 dimes, and 8 quarters.

Let's denote the number of nickels as n, dimes as d, and quarters as q. We have the following three equations based on the information given:

Solving these equations simultaneously will give you the numbers of each coin. If you substitute the third equation into the first and second equation, you get:

Simplify these equations to determine the values of n, q, and d. You would find that n=10, d=12, and q=8. So you have 10 nickels, 12 dimes, and 8 quarters.

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Answer:

option D

Lines a and b are parallel and lines c and d are parallel.

Step-by-step explanation:

Given in the question four lines a , b, c, d.

If two parallel lines (a,b) are cut by a transversal(d), then corresponding angles m<7 and m<15 are congruent.

They are know as corresponding angles.

Hence lines a and b are parallel.

If two parallel lines (c,d) are cut by a transversal(d), then corresponding angles m<13 and m<15 are congruent.

They are know as corresponding angles

Hence lines c and d are parallel

Answer:

S=546 [tex]ft^{2}[/tex]

Step-by-step explanation:

The equation for the volume of a sphere and the surface area of a sphere are as follows

[tex]V=\frac{4}{3} \pi r^{3}[/tex]

[tex]S=4\pi r^{2}[/tex]

As we know that V=1200 we can use the volume equation to solve for r

[tex]1200=\frac{4}{3} \pi r^{3}\\900=\pi r^{3} \\[/tex]

Now we can plug r into the surface area equation

[tex]S=4\pi (\sqrt[3]{\frac{900}{\pi } })^{2} \\\\S=546.09\\S=546 ft^2[/tex] }

Answer:

[tex]\frac{\tan 60\degree}{\cos45 \degree}= \sqrt{6}[/tex]

Step-by-step explanation:

We want to evaluate

[tex]\frac{\tan 60\degree}{\cos45 \degree}[/tex]

We use special angles or the unit circle to obtain;

[tex]\frac{\tan 60\degree}{\cos45 \degree}=\frac{\sqrt{3}}{\frac{\sqrt{2}}{2}}[/tex]

This implies that;

[tex]\frac{\tan 60\degree}{\cos45 \degree}=\sqrt{3}\div \frac{\sqrt{2}}{2}[/tex]

[tex]\frac{\tan 60\degree}{\cos45 \degree}=\sqrt{3}\times \sqrt{2}[/tex]

[tex]\frac{\tan 60\degree}{\cos45 \degree}= \sqrt{6}[/tex]

Answer:

[tex]\sqrt{6}[/tex].

Step-by-step explanation:

[tex]\frac{tan(60)}{cos(45)}[/tex]

[tex]= \frac{\frac{sin(60)}{cos(60)}}{cos(45)}[/tex]

[tex]= \frac{sin(60)}{cos(60)*cos(45)}[/tex]

[tex]= \frac{\frac{\sqrt{3}}{2}}{\frac{1}{2}*\frac{\sqrt{2}}{2}}[/tex]

[tex]= \frac{\frac{\sqrt{3}}{2}}{\frac{\sqrt{2}}{4}}[/tex]

[tex]= \frac{4\sqrt{3}}{2\sqrt{2}}[/tex]

[tex]= \frac{2\sqrt{3}}{\sqrt{2}}[/tex]

[tex]= \frac{2\sqrt{3}\sqrt{2}}{2}[/tex]

[tex]=\sqrt{3}\sqrt{2}[/tex]

[tex]=\sqrt{6}[/tex].

Answer:

The volume of the smaller solid is [tex]339\ yd^{3}[/tex]

Step-by-step explanation:

step 1

Find the scale factor

we know that

If two figures are similar, then the ratio of its surface areas is equal to the scale factor squared

Let

z----> the scale factor

x----> surface area of the larger solid

y----> surface area of the smaller solid

[tex]z^{2}=\frac{x}{y}[/tex]

we have

[tex]x=361\ yd^{2}[/tex]

[tex]y=121\ yd^{2}[/tex]

substitute

[tex]z^{2}=\frac{361}{121}[/tex]

[tex]z=\frac{19}{11}[/tex]

step 2

Find the volume of the smaller solid

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z----> the scale factor

x----> volume of the larger solid

y----> volume of the smaller solid

[tex]z^{3}=\frac{x}{y}[/tex]

we have

[tex]z=\frac{19}{11}[/tex]

[tex]x=1,747\ yd^{3}[/tex]

substitute

[tex](\frac{19}{11})^{3}=\frac{1,747}{y}\\ \\(\frac{6,859}{1,331})=\frac{1,747}{y} \\ \\y=1,331*1,747/6,859\\ \\y=339\ yd^{3}[/tex]

Answer:

48

Step-by-step explanation:

12x8=96

96/2=48

you can check this on a calculatot

they threw in the angel to confuse you

Here is the answer, you can use the formula to find the area

For this case we have that by definition, the volume of a cylinder is given by:

[tex]V = \pi * r ^ 2 * h[/tex]

Where:

r: It is the radius of the cylinder

h: It is the height of the cylinder

We have as data, observing the figure, that they give us the radio. Then, the height is missing.

Answer:

Option B

Answer:

The correct answer is -

2. the height of the cylinder  

Step-by-step explanation:

The volume of the cylinder is given as :

[tex]V= \pi r^{2} h[/tex]

In the given figure, we have the radius. So, we need the height in order to calculate the volume.

So, the correct answer is -

2. the height of the cylinder  

Answer:

Option D.) 28 Pa

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form [tex]y*x=k[/tex] or [tex]y=k/x[/tex]

In this problem

[tex]P*V=k[/tex]

step 1

Find the value of k

For [tex]P=84\ Pa,V=51\ L[/tex]

substitute and solve for k

[tex]k=84*51=4,284[/tex]

step 2

If the volume is expanded to 153 L, what will the new pressure be?

we have

The equation is equal to

[tex]P*V=4,284[/tex]

For  [tex]V=153\ L[/tex]

substitute

[tex]P*153=4,284[/tex]

[tex]P=4,284/153[/tex]

[tex]P=28\ Pa[/tex]

For this case we have that by definition, a polynomial in its standard form is given by:

[tex]P (x) = ax ^ {n} + bx ^ {n-1} + ... + cx ^ 3 + dx ^ 2 + ex + f[/tex]

Where:

a, b, c, d, e, f: They are the coefficients

n, n-1,3,2,1: They are the exponents. The degree of the polynomial is "n" because it is the largest exponent.

x: It is the variable

The given polynomial is:

[tex]4m-2m ^ 4-6m ^ 2 + 9[/tex]

Rewriting it in its standard form:

[tex]P (x) = - 2m ^ 4-6m ^ 2 + 4m + 9[/tex]

It is a polynomial of degree 4

ANswer:

[tex]P (x) = - 2m ^ 4-6m ^ 2 + 4m + 9[/tex]

Answer:

For this case we have that by definition, a polynomial in its standard form is given by:Where:a, b, c, d, e, f: They are the coefficientsn, n-1,3,2,1: They are the exponents. The degree of the polynomial is "n" because it is the largest exponent.x: It is the variableThe given polynomial is:Rewriting it in its standard form:It is a polynomial of degree 4ANswer:

Step-by-step explanation:

Answer:

2.50

Step-by-step explanation:

The average rate of change over the interval −2≤x≤2 is:

(f(2) − f(-2)) / (2 − -2)

From the table, we see that f(2) = 14 and f(-2) = 4.

(14 − 4) / (2 − -2)

10 / 4

2.50

Answer:

2.50

Step-by-step explanation:

Answer:

3/2x

Step-by-step explanation:

Find the slope of the original line.

3x + 2y = 19

2y = -3x + 19

y = -2/3x + 19

Use the reciprocal with the opposite sign.

3/2x

Final answer:

To find the slope of a line perpendicular to 3x+2y=19, first find the original line's slope (-1.5) and then calculate its negative reciprocal, which is 2/3.

Explanation:

The question asks about the slope of a line perpendicular to the given line 3x + 2y = 19. To find this, we first need to find the slope of the given line. We rearrange the equation into slope-intercept form, which is y = mx + b, where m is the slope. For 3x + 2y = 19, subtract 3x from both sides and divide by 2 to get y = -1.5x + 9.5. Thus, the slope of the given line is -1.5. The slope of a line perpendicular to another line is the negative reciprocal of the original line's slope. Therefore, the slope of the line perpendicular to the given line is 2/3.

Answer:

The length of the hypotenuse is [tex]h = 6.71\ units[/tex]

Step-by-step explanation:

For a straight triangle it is true that

[tex]h = \sqrt{a ^ 2 + b ^ 2}[/tex]

Where has is the hypotenuse of the right triangle and a and b are the lengths of the other two sides.

In this case we know that:[tex]a = 3\\b = 6[/tex]

So the hypotenuse is:

[tex]h = \sqrt{3 ^ 2 + 6 ^ 2}[/tex]

[tex]h = \sqrt{3 ^ 2 + 6 ^ 2}[/tex]

[tex]h = 3*\sqrt{5}[/tex]

[tex]h = 3*\sqrt{5}[/tex]

[tex]h = 6.71[/tex]

ANSWER

The hypotenuse is 3√5 units.

EXPLANATION

We use the Pythagoras Theorem.

Let h be the hypotenuse.

The Pythagoras Theorem says that, the hypotenuse square is equal to the sum of the squares of the two shorter legs.

[tex] {h}^{2} = {3}^{2} + {6}^{2} [/tex]

[tex]{h}^{2} = 9+ 36[/tex]

[tex]{h}^{2} = 45[/tex]

Take positive square root.

[tex]h = \sqrt{45} [/tex]

[tex]h = 3 \sqrt{5} units[/tex]

Answer:

7.7%

Step-by-step explanation:

To find the percent error, take the absolute value of (actual amount - estimate) and divide it by the actual amount).  Then multiply it by 100 %

percent error = | actual - estimate|

                          -------------------------- * 100%

                             actual          

                      = | 2.6 -2.4|

                        ----------------- * 100%

                                  2.6

                      = .2 * 100%

                         -----------

                            2.6

                       =7.69230769%

To the nearest tenth percent

                      =7.7%

Answer:

15 yards, 45 feet and 540 inches are equal.

Step-by-step explanation:

To know if the measurements are equal, we first need to convert all the measures to the same unit. In this case, I will convert them all to feet.

a.6 feet

b.15 yards ≈ 45 feet

c.45 feet

d.600 inches ≈ 50 feet

e. 12 feet

f. 540 inches  ≈ 45 feet

Therefore, b, c and f are equal.

ANSWER

9.7 units

EXPLANATION

According to the Pythagoras Theorem, the square of the hypotenuse is equal to the sum of the squares of the two shorter legs

[tex] {x}^{2} + {7}^{2} = {12}^{2} [/tex]

This implies that,

[tex] {x}^{2} + 49= 144[/tex]

Group similar terms,

[tex] {x}^{2} = 144 - 49[/tex]

[tex] {x}^{2} = 95[/tex]

[tex]x = \sqrt{95} [/tex]

[tex]x = 9.7 \: units[/tex]

to the nearest tenth.

Answer:

Final answer is [tex]\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=x[/tex].

Step-by-step explanation:

Given problem is [tex]\sqrt[3]{x}\cdot\sqrt[3]{x^2}[/tex].

Now we need to simplify this problem.

[tex]\sqrt[3]{x}\cdot\sqrt[3]{x^2}[/tex]

[tex]\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}[/tex]

Apply formula

[tex]\sqrt[n]{x^p}\cdot\sqrt[n]{x^q}=\sqrt[n]{x^{p+q}}[/tex]

so we get:

[tex]\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=\sqrt[3]{x^{1+2}}[/tex]

[tex]\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=\sqrt[3]{x^{3}}[/tex]

[tex]\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=x[/tex]

Hence final answer is [tex]\sqrt[3]{x^1}\cdot\sqrt[3]{x^2}=x[/tex].

The original expression ∛x * ∛[tex]x^2[/tex] simplifies to x.

This means that the cube root of x times the cube root of [tex]x^2[/tex] is equal to x.

To simplify the expression ∛x * ∛[tex]x^2[/tex], we can apply the rules of exponents and radicals.

The cube root of x is equivalent to raising x to the power of 1/3.

Similarly, the cube root of [tex]x^2[/tex]  is equivalent to raising [tex]x^2[/tex] to the power of 1/3.

So, we have:

∛x = [tex]x^{(1/3)[/tex]

∛[tex]x^2 = (x^2)^{(1/3)} = x^{(2/3)[/tex]

Now, let's multiply these two expressions:

[tex]x^{(1/3)}\times x^{(2/3)[/tex]

To simplify, we add the exponents when multiplying like bases:

[tex]x^{(1/3 + 2/3)} = x^{(3/3)} = x^1[/tex]

So, the simplified expression is just x.  

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Answer:

(a) Option 3

(b) Option 1

(c) Option 2

Step-by-step explanation:

Given information: m∠ABC = m∠CBD

Prove: BC bisects ∠ABD.

Proof:

[tex]m\angle ABC=m\angle CBD[/tex]             (Given)

Definition of congruent: Two angles are congruent if their measures are equal.

[tex]\angle ABC\cong \angle CBD[/tex]         (Definition of bisect)

Definition of bisect: If a line divides an angle in two equal parts, then the line is called angle bisector.

BC bisects ∠ABD                    (Definition of bisect)

Hence proved.

An angle bisector divides the angle into two equal parts. The justification of each step of the flowchart is as follows

From the question, we are given that:

[tex]\angle ABC =\angle CBD[/tex]

This represents the first step of the flowchart.

So, the justification is (3) Given

From the figure, we have that:

[tex]\angle ABC \cong \angle CBD[/tex]

This represents the second step of the flowchart.

[tex]\cong[/tex] mean congruent

So, the justification is (1) Definition of congruent

Lastly:

Line BC bisects [tex]\angle ABC[/tex].

This represents the third step of the flowchart.

So, the justification is (2) Definition of bisect

Because line BC divides [tex]\angle ABC[/tex] into two equal halves.

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Answer:

a(n) = 3*(2)^(n-1)

Step-by-step explanation:

Each new term is found by multiplying the previous term by 2.  The first term is 3.  Using the standard explicit formula for a geometric series, we get:

a(n) = a(1)*r^(n-1).  In this particular case we have a(n) = 3*(2)^(n-1).