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

5 0

3 years ago

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A student can solve 20 problems in 30 minutes. How long would it take him to solve 50 problems? Answer fast please.

stiks02 [169]

The answer will be 60

7 0

2 years ago

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ABCD is a parallelogram. Solve for BC. B X + 8 с A 2x +1 D BC =

Arturiano [62]

Step-by-step explanation:

BC = AD (opposite sides in parallelogram is equal)

x + 8 = 2x + 1

8 - 1 = 2x - x

7 = x

x = 7

BC = x + 8 = 7 + 8 = 15

7 0

2 years ago

0.000006 write each number in scientific notation?​

0.000006 write each number in scientific notation?