in need of help please :/

Answer:

x≤-8

Step-by-step explanation:

When solving 8x-8≤-72, first add 8 to both sides of the inequality.

This leaves you with 8x≤-64.

Divide both sides by 8: 8x/8 and -64/8

This leaves you with x≤-8 as your solution.

Answer: 81 miles

Step-by-step explanation:

if 2 inches = 54miles then 1 inch is 27 miles because 54/2=27

so 3 inches means 3(27)=81 miles from yuma to sentinel

Answer:

it is 32

Step-by-step explanation:

you multipy 8 buy 4 =32

Answer:

x/4 -5> -4

add 5 on both sides

x/4 > 1

multiply by 4 on both sides

x > 4

Step-by-step explanation:

Answer:

Twenty cookies deal

Step-by-step explanation:

A dozen cookies cost 18.75. A dozen is exactly 12. If you divide 18.75 by 12 you should get the unit price which is about $1.56 for each cookie. For 25.50 you just divide it by 20 and you should get about 1.20 which makes it a better deal.

Answer:

10

Step-by-step explanation:

The distance is equal to the modulus of Z1-Z2.

[tex]Z_1 - Z_2 = -7 - 6i - (-15 - 12i) = 8 + 6i\\|8 + 6i| = \sqrt{8^2 + 6^2} = \sqrt{64 + 36} = \sqrt{100} = 10[/tex]

Answer:

(D. the volume of a cone in cubic feet)

Step-by-step explanation:

A should be inches, not square inches

B should be square meters, not meters

C should be miles per gallon (or KM per gallon), not just gallons

Answer:

Standard form is - (x - 7)² + (y - 4)² = 5²

General form is - x² + y² - 14x - 8y + 40 = 0

Step-by-step explanation:

Given - The CB radio of a trucker covers the circular area of (7,4).

             Find the equation of that circle.

To find - Find the equation of that circle. Give your answer in both

              standard and general form.

Proof -

Given that,

Center of CB radio = (7, 4)

Point on the Boundary = (10, 0)

Now,

We know that radius, r is

r = [tex]\sqrt{(7-10)^{2} + (4-0)^{2} }[/tex]

 = [tex]\sqrt{(-3)^{2} + 4^{2} }[/tex]

 = [tex]\sqrt{9 + 16}[/tex]

 = [tex]\sqrt{25} = 5[/tex]

⇒r = 5

∴ we get

Standard form is - (x - 7)² + (y - 4)² = 5²

General form is -

x² + 7² - 2·7·x + y² + 4² - 2·4·y = 25

⇒x² + 49 - 14x + y² + 16 - 8y = 25

⇒x² + 65 - 14x + y²  - 8y = 25

⇒x² + 65 - 14x + y²  - 8y - 25 = 0

⇒x² - 14x + y²  - 8y + 40 = 0

So, the general form is -

x² + y² - 14x - 8y + 40 = 0

Answer:

X= 6 cm

Step-by-step explanation:

hope it helps u

have a great day!!!

If two ratios are similar we called the ratios to be in proportion.

The length of side x is 6 cm.

If two ratios are similar we called the ratios to be in proportion

We have,

Two shapes:

Consider the bigger shape width = 15 cm and length = 10 cm.

Consider the smaller shape width = 9 cm and length = x cm.

Let the ratio of bigger shape:

= Width / length

= 15/10

Let the ratio of smaller shape:

= Width / length

= 9/x

If the two figures are mathematically similar we can say that the two figures are in proportion.

We can write it as:

15/10 = 9/x

3/2 = 9/x

x = 6

Thus the length of side x is 6 cm.

Learn more about proportion here:

https://brainly.com/question/26974513

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Answer:

20/21

Step-by-step explanation:

have a nice day or evening

Answer: B=8

Step-by-step explanation: I got this right on Edmentum.

The value of the variable b will be 8. Then the correct option is B.

The determinant in math is a scalar quantity that is a result of the rows and columns of a matrix form.

If the determinant of this matrix is 24.

The matrix is given below.

[tex]\begin{bmatrix}-5 & 4 & 1 \\5 & -7 & -4 \\-6 & b & 6 \\\end{bmatrix}[/tex]

R₁ ⇒ R₁ + R₂

[tex]\begin{bmatrix}0 & -3 & -3 \\5 & -7 & -4 \\-6 & b & 6 \\\end{bmatrix}[/tex]

C₂ ⇒ C₂ – C₃

[tex]\begin{bmatrix}0 & 0 & -3 \\5 & -3 & -4 \\-6 & b-6 & 6 \\\end{bmatrix}[/tex]

Then the value of b will be

–3[5(b – 6) – (–3)(–6)] = 24

             (5b – 30 – 18) = –8

                                5b = 40

                                  b = 8

Then the correct option is B.

The question was incomplete, but the complete question is given below.

More about the determinant link is given below.

https://brainly.com/question/13369636

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Answer:

x = 15

Step-by-step explanation:

x + 2y = 37

x - y = 4

x + 2y = 37

2x - 2y = 8

3x = 45

x = 15

Answer: there is no solution

Step-by-step explanation: 1/4z — 13 is not the same as 1/4 + 13

Say z = 1 that would simplify as -12 3/4 = 13 1/4 they are not the same so there is no solution

Answer:

50

Step-by-step explanation:

What I did was 2 divided by 100 = 0.02 Then multiply 0.02 times 500 and you should get 10 then multiply by how many years of interest and you get 50  

Answer:

$20.30

Step-by-step explanation:

Original price = 100% of the price

100% = $29

1% = 29 ÷ 100 = 0.29

Sale percentage = 30%

30% = 0.29 x 30 = 8.70

Since they are asking for the sale price of the shoes, it means the price of the shoes after the discount of the sale percentage.

29 - 8.70 = 20.3

Answer:

I'm pretty sure that it's C.

Answer:

The mean number of deliveries for driver A is less than the mean for driver B by 1 MAD.

Step-by-step explanation:

Test appoved

10-6x=4+5x

-3 from both sides

7-6x=1+5x

Step-by-step explanation:

if you want the answer to the actual thing then here:

10-6x=4+5x

+6x

10=4+11x

-4

6=11x

÷11

0.54≈ x

(I rounded it to 2dp which is why it has the squiggly equal sign to show that it is not quite equal but is an estimation of some kind

Answer:

8

Step-by-step explanation:

Answer:

12 edges

Step-by-step explanation:

It might help to drag your finger along the edges in the image. Think about it as if you had to make this image out of sticks. How many sticks would you need to make a standing frame like this one?

12 sticks

Answer:

c) 3

Step-by-step explanation:

The first step is to see if it is positive or negative. since it is going upward and to the right, it is positive, if it is going upward and to the left it is negative. So since it is positive the answer is either a or c. Now that we have our 2 points we need to calculate how far they are. Whenever measuring the distance of 2 points, look how many units it's above or below, then divide by the units it's to the left or right. So for this, it takes 3 points to go up, then 1 point to the side. We don't calculate 1 to the side and 3 down. We always calculate if it goes up and down, and then to the sides.

Answer:

x = -37.5

Step-by-step explanation:

Set up a proportion so -5/12.5 = 15/x

Solve for x so -5x = 15(12.5) so -5x = 187.5 so x = -37.5

Answer:yes because the slopes od the lines are the same but the y intercepts are differen.

Step-by-step explanation:

when you connect (5,8) and (13,24) then (3,3) and (7,11) they insect what the the lines. so C yes because the slopes of the lines are the same but y intercepts are different

Answer:

answer is c Hope this helps

Step-by-step explanation:

Answer:

I think the equation would be 345 = 121 + p

Answer:

No it doesn't

Step-by-step explanation:

It has two X values that means it can't be a function

Answer: you on this to

Step-by-step explanation:

Answer:

6. the table shows exponential growth.

7. the initial value is 3

8. im not sure about this

9. 0.25 or 25%

Answer:

7xy + 6

Step-by-step explanation:

=> here's your solution

=>. we need to subtract (8xy + 3) from

( 15xy +9 )

=> (15xy + 9) - ( 8xy + 3)

=>. 15xy + 9 - 8xy - 3

=> 15xy - 8xy + 9 - 3

=>. 7xy + 6

hope it helps