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BARSIC [14]
3 years ago
5

Complete the solution of the equation Find the value of y when x equals 11. 7x-9y=23

Mathematics
1 answer:
Setler79 [48]3 years ago
8 0
Replace the variable x with it's value in the equation and solve for y.

7(11) - 9y = 23

77 - 9y = 23

Subtract both sides by 77.

77 - 9y - 77 = 23 - 77

-9y = -54

Divide both sides by -9.

-9y / -9 = -54 / -9

y = 6

So, 6 is the answer.
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Choose Yes or No to tell whether the expressions are equivalent. 1. 4(5c + 3) and 9c + 7 yes or no 2. 10f – 10 and 2(8f – 5) yes
Juli2301 [7.4K]

Answer:

1) No

2) No

3)Yes

4)No

Step-by-step explanation:

Distributive property: a(b + c) =a*b + a*c

1) 4(5c + 3) = (4*5c) + 4*3

                  = 20c + 12

NO

2) 2(8f - 5) = (2*8f) - (2*5)

                 = 16f - 10

NO

3) 3(4g + 7) = (3*4g) + (3*7)

                  = 12g + 21

YES

4) 6(4j - 6) =(6 * 4j) - (6*6)

                = 24j - 36

NO

5 0
3 years ago
Consuelo's living room is in the shape of a rectangle and has an area of 360 square feet. The width of the living room is 5/8 it
uranmaximum [27]
<h2>Therefore the length of the living room = 24 ft</h2>

Step-by-step explanation:

Given that , Consuelo's living room is in the shape of rectangle and has an area of 360 square feet and the width of the living room is \frac {5}{8}   its length

Let ,the length of the living room is = x ft

Then width =\frac {5}{8}x ft

Therefore the area of the living room =x \times \frac {5}{8}x ft^2

According to problem,

x\times \frac {5}{8}x = 360

⇔\frac{5}{8}x^2=360

⇔x^2 = \frac{360\times 8}{5}

⇔x^2 = 576

⇔x=\sqrt{576}

⇔x = 24

Therefore the length of the living room = 24 ft

8 0
3 years ago
Read 2 more answers
Lynne was making cookies and she
charle [14.2K]

Answer:

4 cups of flour

Step-by-step explanation:

We just need to double 2. The phrase "double" means to multiply by 2 so the answer is 2 * 2 = 4 cups of flour.

3 0
3 years ago
F(x) = x^2 + 4x. G(x) = 1 + e^2x. As a single logarithm find fg(x) = 21
vfiekz [6]

Answer:

1/2 log2

Step-by-step explanation:

I hope you understand

8 0
2 years ago
How do you solve this problem
torisob [31]
Divide the price by the number of payments.

$15,480/36 = $430
4 0
3 years ago
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