2 Math Questions about coordinates

Answer:

the answer is d

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

To see if it is a solution substitute x in and see if it works for y

a.  y>= x +2

-4 >= -2+2

-y> = 0 No

b y <= x+2

  -4<=-2+2

-4 <0  True

keep going

y<= x-3

-4 <= -2-3

-4<=-5

No

c  y> x+2

  -4 >-2+2

-4 > 0

True

y< x-3

-4 <-2-3

-4 <-5

NO

d y <= x+2

-4 <= -2+2

-4<=0

True

-4 >= -2-3

-4>=-5

This is the solution

Choice A is a trinomial, but it doesn't have a constant term

Choice D is the only other trinomial. This has a constant term, which is 6. The constant is the term without any variables attached to it.

Answer: Choice D

Answer:  D. [tex]x+7y+6[/tex]

Step-by-step explanation:

We know that a trinomial is a polynomial with three terms.

From all the given options, only option A. [tex]x^3+12x^2+x[/tex] and option D. [tex]x+7y+6[/tex] are trinomials having three terms .

But option A [tex]x^3+12x^2+x[/tex] does not have any constant term .

On the other hand option D. [tex]x+7y+6[/tex] has a constant term of 6.

Therefore, the option D. [tex]x+7y+6[/tex] represents a trinomial with a constant term.

Answer:

BC

Step-by-step explanation:

The diameter is the distance across the circle, going through the center

BC or CB is the diameter

Answer: Carlos would owe in fact (Not including sales taxes) $44.18 (forty-four dollars and eighteen cents)

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

The 'm' value stands for the slope in the context of a linear equation (y = mx + b). In the provided example, it was determined to be 3, i.e., for each unit movement along the x-axis, there will be a three units movement along the y-axis.

The

value of m

in your diagram is representative of the slope in a mathematical equation, specifically in the context of a linear equation in the form y = mx + b. Here, 'm' describes how much the line on the graph moves up or down on the y-axis along the line's length. This usually means how much 'y' changes for each one-unit change in 'x'. According to the information provided, assuming that the equation is y = mx + b and b is set to 9, the m value has been determined to be 3. This indicates that for every step you move horizontally (along the x-axis), you would move three steps vertically (along the y-axis). Hence, in this case, the value of 'm' is 3.

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Answer: B

Step-by-step explanation:

   (x - 6) (x¹⁾²) (x + 3)

= (x¹⁾²) (x² - 3x - 18)

= x⁵⁾² - 3x³⁾² - 18x¹⁾²

= √x⁵ - 3√x³ - 18√x

********************************************

Answer: B

Step-by-step explanation:

[tex]\frac{f(x)}{g(x)} =\frac{(x+1)^{-1}}{x-2} = \frac{1}{(x+1)(x-2)}[/tex]

Since denominator cannot equal zero,

x + 1 ≠ 0     and      x - 2 ≠ 0

 x ≠ -1        and         x ≠ 2

Interval Notation: (-∞, -1) U (-1, 2) U (2, ∞)

Answer:

1  False

b. 4.6 and -1.1

Step-by-step explanation:

A negative answer for x is ok

A negative answer inside the square root is not ok.  A negative answer inside the square root means the answer is not real.  A negative answer just means that x is less than zero.

The quadratic formula is

-b ± sqrt(b^2 -4ac)

----------------------------

2a

2x^2 -10= 7x

Lets get the equation in proper form

2x^2 -7x-10 = 7-7x

2x^2 -7x-10 =0

a=2  b=-7 c=-10

7 ± sqrt((-7)^2 -4(2)(-10))

----------------------------

2(2)

7 ± sqrt((49 +80)

----------------------------

4

7 ± sqrt((129)

----------------------------

4

7 ±11.3579

----------------------------

4

7 +11.3579             7-11.3579

------------------ and   -------------

4                                  4

4.589  and  -1.089475

Rounding

4.6 and -1.1

Answer: Daniel has $22 in his savings account balance.

Step-by-step explanation:

Let Daniel's savings account balance be x

and Henry's savings account balance be y, then as given Daniel's savings account balnce is 20 times that of Henry's, We get [tex]x=20y[/tex]...........(1)

And also total amount of both savings account is $462 so we get [tex]x+y=462[/tex] ......(2)

Now by substituting values of x from (1) into (2) we get,

[tex]20y + y=462\\21y=462\\y=22[/tex]

And [tex]x=$440[/tex]

So, Daniel's savings account balance is $440

and Henry's savings account balance is $22

Answer:

Daniel have $440 in his savings account.

Step-by-step explanation:

Given that Daniel's saving account balance is 20 times the amount of Henry's savings account balance.

So, let Henry's saving account balance = x

Therefore, Daniel's saving account balance = 20 x

Given that total amount of money contained in both account is $ 462

    ⇒  20 x + x = 462

         21 x =462 ⇒ x = 22

  Hence, Daniel's saving account balance = 20 x

                                                                      = 20 * 22

                                                                     = $ 440

Final answer:

The new price of the item is $3 after the 85% reduction from the original price of $20.

Explanation:

To find the new price of the item after an 85% reduction, we start with the original price and calculate 85% of that price to know how much is being subtracted. The original price is $20. Now let's calculate 85% of 20 dollars:

0.85 (85%) × $20 = $17

This means an $17 reduction from the original price. We subtract this from the original price to find the new price:

$20 - $17 = $3

The new price of the item is $3 after a reduction of 85%.

Answer:

Pretty sure the answer is 18-30i

Step-by-step explanation:

-30i - 18i^2

-30i - 18 x (-1)

-30i +18

The expression -6i(5+3i) simplifies to 18 - 30i in standard form of a complex number.

The problem asks us to simplify the expression -6i(5+3i). To simplify this, we multiply the complex number (-6i) with the complex number in the parenthesis. This results in (-6i * 5) + (-6i * 3i) which transforms into -30i - 18i^2. Since i^2 is -1, we can simplify further to -30i + 18. So the simplified form in standard form is 18 - 30i.

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6. Answer: y = 5x - 11

Step-by-step explanation:

Parallel means "same slope".  y = 5x - 2 is in the form y = mx + b,

so the slope (m) = 5

Next, input the point (x₁, y₁ = 2, -1) and slope (m = 5) into the Point-Slope formula:

y - y₁ = m(x - x₁)

y - (-1) = 5(x - 2)

y + 1 = 5x - 10

y      = 5x - 11

*******************************************************************

7. Answer: [tex]\bold{y = \dfrac{1}{3}x + 4}[/tex]

Step-by-step explanation:

Perpendicular means "opposite reciprocal slope". y = -3x + 7 is in the form y = mx + b, so slope (m) = -3 ⇒ m⊥ = [tex]\frac{1}{3}[/tex]

Next, input the point (x₁, y₁ = 3, 5) and slope (m = [tex]\frac{1}{3}[/tex] ) into the Point-Slope formula:

y - y₁ = m(x - x₁)

[tex]y - 5=\dfrac{1}{3}(x - 3)[/tex]

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

   [tex]y=\dfrac{1}{3}x + 4[/tex]

Answer:

[tex]18[/tex] skis and [tex]10[/tex] snowboards were rented.

Step-by-step explanation:

Let the number of skis rented be [tex]x[/tex] and the number of snowboards rented be [tex]y[/tex].

If a total of [tex]28[/tex] people rented on a certain day, then the total number of skis and snowboards rented that particular day is also [tex]28[/tex].

This gives us the equation

[tex]x+y=28...eqn(1)[/tex].

If skis cost $ [tex]16[/tex], then [tex]x[/tex] number of skis cost $ [tex]16x[/tex].

If snowboards cost $ [tex]19[/tex], then [tex]y[/tex] number of snowboards cost $ [tex]19y[/tex].

The total cost will give us another equation,

[tex]16x+19y=478...eqn(2)[/tex]

From equation (1),

[tex]y=28-x...eqn(3)[/tex].

We put equation (3) into equation (2) to get,

[tex]16x+19(28-x)=478[/tex]

We expand the brackets to obtain,

[tex]16x+532-19x=478[/tex]

We group like terms to get,

[tex]16x-19x=478-532[/tex]

This implies that,

[tex]-3x=-54[/tex]

We divide both sides by [tex]-3[/tex] to get,

[tex]x=18[/tex]

We put [tex]x=18[/tex] into equation (3) to get,

[tex]y=28-18[/tex]

[tex]y=10[/tex]

Therefore [tex]18[/tex] skis and [tex]10[/tex] snowboards were rented.

To solve this problem, you can set up a system of equations where one equation represents the total number of skis and snowboards rented, and the other represents the total cost of those rentals. By solving this system, you can determine the number of skis and snowboards rented.

This problem is a classic example of a system of linear equations. Let's denote the number of skis rented as x and the number of snowboards rented as y. From the problem, we know that:

By solving these two equations, we can find the values of x and y which represent the number of skis and snowboards rented respectively.

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Answer:

He got paid 10$ an hour. It does not say he gets paid for cleaning his room.

Step-by-step explanation:

10 x 4 = 40$

Samuel earned $6.67 per hour.

To calculate how much money Samuel earned per hour, we need to find the total number of hours he spent both mowing the lawn and cleaning his room.

Samuel spent 4 hours mowing the lawn and 2 hours cleaning his room, for a total of 6 hours.

He earned $40 for this time period.

To find how much he earned per hour, we divide the total amount earned by the total number of hours:

$40 divided by 6 hours = $6.67 per hour.

Therefore, Samuel earned $6.67 per hour.

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Answer:

x = 7 and y = 2

Step-by-step explanation:

the denominator of f(x) cannot be zero as this would make f(x) undefined. Equating the denominator to zero and solving gives the value that x cannot be and if the numerator is non-zero for this value then it is a vertical asymptote

solve x - 7 = 0 ⇒ x = 7 is the asymptote

horizontal asymptotes occur as

[tex]lim( x → ± ∞), f(x) → c ( where c is a constant )

divide terms on numerator/ denominator by x

f(x) = (3/x/x/x -7/x ) + 2

as x → ± ∞, f(x) → 0 / 1 - 0 + 2 = 2

y = 2 is the asymptote

Answer: Vertical asymptote is x = 7

              Horizontal asymptote is y = 2

Step-by-step explanation:

The vertical asymptote is the restriction on the domain (x-value).  Since the denominator cannot be zero  ⇒  x - 7 ≠ 0  ⇒  x ≠ 7  so the vertical asymptote is at x = 7.

The horizontal asymptote (H.A.) is the restriction on the range (y-value). There are three rules that determine the horizontal value which compare the degree of the numerator (n) with the degree of the denominator (m):

In the given problem, n = 0 and m = 1  ⇒  n < m  ⇒  H.A. is y = 0

Since there is a vertical shift of +2 units, the H.A. is y = 0 + 2  ⇒  y = 2

Final answer:

Hisaki can make 4 1/3 batches of sugar cookies with the amount of sugar he has.

Explanation:

To find out how many total batches of sugar cookies Hisaki can make, we need to divide the total amount of sugar he has (3 1/2 cups) by the amount of sugar needed for one batch (3/4 cup).

We can convert the mixed number 3 1/2 into an improper fraction: 3 1/2 = 7/2.

Now, we divide 7/2 by 3/4: (7/2) ÷ (3/4) = (7/2) x (4/3) = 28/6 = 4 2/6 = 4 1/3.

Therefore, Hisaki can make a total of 4 1/3 batches of sugar cookies with the amount of sugar he has.

Answer:

there should be 4 slices left

Hope This Helped

Step-by-step explanation:

Answer:

The most accurate answer is:

*4*

I hope I helped you!

Step-by-step explanation:

Alright, lets examine the problem; *12* slices of pizza are given. We also have *4* guests at the table, and each are given *2* slices. Lets use subtraction to solve: 12 - 2 - 2 - 2 - 2- the *2*'s equal the amount of pizzas given, and the *12* represents our amount of slices of pizza. We also gave 4 people 2 slices, which is why we have *4* *2*'s

[SOLVE]

12 - 2 - 2 - 2 - 2 = 4

Answer:

I) P(cat│dog) = [tex]\frac{0.15}{0.38}[/tex]

II) These events are not independent

III) P(cat or dog)=  0.7

Step-by-step explanation:

Given : Households have  dogs = 38%

           So, P(dog) = 0.38

           Households have  cats = 47%

           So, P(cats) = 0.47

             Households have both dogs and cats  = 15%

           So, P(both dog and cat ) = [tex]P(cat\cap dog)[/tex] = 0.15

solution :

i) By formula P(A│B) =[tex]\frac{P(A\cap B)}{P(B)}[/tex]

P(cat│dog)= [tex]\frac{P(cat\cap dog)}{P(dog)}[/tex]

P(cat│dog) = [tex]\frac{0.15}{0.38}[/tex]

ii)  P(cat│dog)=39.47% = 0.39 and P(cat)=47% = 0.47, are the events not independent

Because condition for independent events in conditional probability is P(A|B)=P(A)

but P(cat│dog) ≠P(cat) i.e. 0.39≠0.47

So, these events are not independent

iii) P(cat or dog) = ?

"or" means union

Formula : [tex]P(A\cup B)= P(A) + P(B)-P(A\cap B)[/tex]

P(cat or dog) = [tex]P(cat\cup dog)= P(cat) + P(dog)-P(cat\cap dog)[/tex]

P(cat or dog)= 0.47 + 0.38 - 0.15

P(cat or dog)=  0.7

Answer:

Step-by-step explanation:

Cats are better (sorry, I just had to say it.)

Answer:

13.2'

Step-by-step explanation:

zip line, tower n finish form right-angle triangle w/

zip line as hypothesis=20' n the distance to finish as one side=15'

the tower height^2 + 15^2 = 20^2

the tower height = sqrt (400-225)

=sqrt(175)

=13.2'

Answer:

Lucy has to climb 13.2 feet.

Step-by-step explanation:

By the Pythagoras theorem, with zip line being the hypothesis and the distance from tower base to finish as one side,

20^2 = 15^2 + Height^2

Height^2 = 400 - 225 = 175

Height = 13.22 feet

Lucy has to climb 13.2 feet.

Answer:

[tex]x=\frac{-5+ln9}{3}[/tex] which appears to be from the list x=ln9-5/3

Step-by-step explanation:

We take the natural logarithm of both sides as the inverse operation to an exponent on e. This allows us to use log rules to rearrange the problem.

[tex]e^{3x+5}=9\\lne^{3x+5}=ln9 \\(3x+5)lne=ln9[/tex]

We know that as inverse operations, ln e =1.

[tex](3x+5)(1)=ln9\\3x+5=ln9\\3x=-5+ln9\\\frac{3x}{3}=\frac{-5+ln9}{3}[/tex]

[tex]x=\frac{-5+ln9}{3}[/tex]

Answer:

x  = (ln (9)-5) /3

Step-by-step explanation:

e^3x+5=9

First we subtract 5 from each side

e^3x+5-5=9-5

e^3x=(9-5)

Then we take the natural log of each side

ln(e^3x) = ln(9-5)

3x = ln (9-5)

Then we divide by 3 on each side

3x/3  = ln (9-5) /3

x  = ln (9-5) /3

Final answer:

To convert y = -3/4x - 6 to standard form with integers, multiply by 4 to remove the fraction and then arrange the equation as 3x + 4y = -24.

Explanation:

To write the equation y = -3/4x - 6 in standard form using integers, we need to rearrange the terms so that the x and y terms are on the left side of the equation and the constant is on the right side. Moreover, in standard form, the coefficients should be integers. The standard form is typically expressed as Ax + By = C.

Starting with the given equation:

y = -3/4x - 6

Multiply each term by 4 to remove the fraction:

4y = -3x - 24

Now, we need to move the x term to the left side of the equation:

3x + 4y = -24

This is the standard form of the equation, and all the coefficients are integers.

In order to express the equation 5x - y = -17 in slope-intercept form (y = mx + b), we need to solve for y. After rearranging, it turns out the correct equation in slope-intercept form is y = 5x + 17.

To write the equation 5x - y = -17 in slope-intercept form, we first need to solve the equation for y. The slope-intercept form of a linear equation is y = mx + b, where m represents the slope, and b represents the y-intercept.

Let's rearrange the given equation: Start by adding 'y' to both sides to get 5x = y - 17. Add 17 to both sides, you will get y = 5x + 17. So, the correct answer is: y = 5x + 17. This aligns with option c.

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Comparing this with the answer choices, the correct option is c: y = 5x - 17.

To write the linear equation 5x - y = -17 in slope-intercept form, you must solve for y. The slope-intercept form of a linear equation is y = mx + b, where m represents the slope and b represents the y-intercept.

Let's rearrange the given equation:

Comparing this with the answer choices, the correct option is c: y = 5x - 17.

Answer:

True

Step-by-step explanation:

The reason I say this is because of the fact you can't go into retirement without knowing how much your going to get. You need to create a financial plan stating how much you will get and how much you have saved prior to this occurence.

Hope This Helps :)

Answer: True

Step-by-step explanation: People need to develop a plan to overcome the effects of taxation, inflation, and purchasing power risk. In addition, people need to coordinate their company benefits with a personalized financial plan. Because there are many complexities in dealing with the stock market and real estate, you need to have a properly constructed financial plan.

If the line MN is the angle bisector of ΔJMK, then it creates two angles of equal measure. Hence, m∠JMN is half of m∠JMK due to the property of an angle bisector.

In the field of geometry, an angle bisector is a line or ray that divides an angle into two equal angles. This is given by the information provided that MN is an angle bisector of ΔJMK.

By definition, if MN is an angle bisector of ΔJMK, then it creates two angles, ∠JMN and ∠NMK, that are equal in measure. So, we have m∠JMN = m∠NMK. This is the definition of an angle bisector, which is the reason you are looking for.

Given this, if you want to find m∠JMN in terms of ∠JMK, keep in mind that MN bisects ∠JMK, creating the two equal angles we just mentioned. Therefore, m∠JMK = m∠JMN + m∠NMK. Since ∠JMN and ∠NMK are equal, m∠JMK = 2m∠JMN. Hence, m∠JMN = 1/2m∠JMK. This would be a consequence of the angle bisector property.

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Answer:

32, 2/3 minutes.

Step-by-step explanation:

Divide the original mile time by two to get what half a mile would be. Multiply the original mile time by 3, since he is running 3 miles. Add 4 and 2/3, half of a mile time, to that and you're left with 32 minutes and 40 seconds.

From 1 pm to 3 pm is 2 hours.

208 miles - 120 mile = 88 miles

You drove 88 miles in 2 hours.

Speed = miles driven /  time driven:

88 / 2 = 44 miles per hour

Answer:

44 miles/hour

Step-by-step explanation: since speed = distance/time

                                                                   = 88miles/2hours

                                                                   =44miles/hour

Answer:

d SA /dt = 36  in ^2 / hour

Step-by-step explanation:

Surface area of a cube is  6s^2

We need to take the derivative with respect to t

d SA / dt = ds /dt * 12 s

We know ds /dt is 1.5 inches per hour

   s = 2 for the particular instant we are looking at

d SA / dt =1.5 * 12 *2

d SA /dt = 36  in ^2 / hour

Answer:

-36 inches^2 per hour

Step-by-step explanation: