$|x|=a\iff x=a\ or\ x=-a\\==============================\\|x+3|=12\iff x+3=12\ or\ x+3=-12\ \ \ \ |subtract\ 3\ from\ both\ sides\\\\\boxed{x=9\ or\ x=-15}$

5 0

3 years ago

Read 2 more answers

Determine the missing angle

Assoli18 [71]

Answer:

106°

Step-by-step explanation:

These angles are alternate interior, therefore they are equal to each other.

4 0

2 years ago

Difference Between ten and a number is the sum of eight and number <br> Help !!?

Murrr4er [49]

Answer:

x = 1

Step-by-step explanation:

We will represent the unknown number as x

10 - x = 8 + x

Add x to both sides

10 - x + x = 8 + x + x

10 = 8 + 2x

Subtract 8 from both sides

10 - 8 = 2x

2 = 2x

Divide both sides by 2

1 = x

x = 1

3 0

3 years ago

What is the surface area of the box if it is scaled up by a factor of 10? The surface area is: 736 cm. Lenght: 12 cm. Width: 4 c

grandymaker [24]

739*12*4*20=71,000 divded by 2=36,000

6 0

3 years ago