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lesya692 [45]
2 years ago
14

How to solve …….::::::::::

Mathematics
1 answer:
ValentinkaMS [17]2 years ago
6 0
Simplify and evaluate

9) 6x^2 - 27 + 4x^3

10) -7x2 - 5x + 9
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Ms. Carter has 30 boxes of books. Half of the boxes have 25 books and the other half have 50 books. How many books does she have
Nikitich [7]
15 x 25 = 375
15 x 50 = 750

375 + 750 = 1,125

She has 1,125 books. 
5 0
3 years ago
Read 2 more answers
Need help not sure what to do
Rama09 [41]

5a)

2x + 94 = 7x + 49 (vertical angles are equal)

2x - 7x = -94 + 49

-5x = -45

x = 9

Answer

9

5b)

4y + 7x + 49 = 180 (supplementary angles, sum = 180)

4y + 7(9) + 49 = 180

4y + 112 = 180

4y = 68

y = 17

Answer

17

6)

x = 6x - 290 (vertical angles are equal)

-5x = -290

  x = 58

Answer

58


7 0
3 years ago
3n + 14= --4 What is the answer
andre [41]

Answer: n = -6

Step-by-step explanation:

3n+14=-4

Subtract 14 from both sides.

3n+14-14=-4-14

Simplify

3n=-18

Divide both sides by 3

3n/3 = -18/3

n=-6

5 0
2 years ago
Read 2 more answers
It costs $7 each way to travel to work each weekday by train. What is the weekly expense each way?
lord [1]

Answer:

it could either be 35 or 70

Step-by-step explanation:

4 0
3 years ago
9. If y = kx, where k is a constant, and y = -3<br> when x = 6, what is the value of x when y = 12?
NemiM [27]

Hey there! :)

Answer:

x = -24.

Step-by-step explanation:

Plug in the values to find the value of 'k':

-3 = k(6)

Divide both sides by 6 to solve for 'k':

-3/6 = k

k = -1/2

Plug this into the equation to solve for the value of x when y= 12:

12 = -1/2(x)

Divide both sides by -1/2:

-24 = x

x = -24.

4 0
2 years ago
Read 2 more answers
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