Answer:

Step-by-step explanation:
we have

Solve for x
Adds 6 both sides


Divide by 3 both sides

square root both sides

Remember that

so

simplify

3/4÷2 is equal to 3/4*1/2 so 3 times 1 is 3 and 4 times 2 is 8 so 3/4*1/2=3/8
Answer:
21) x = 0
23) x = 7
Step-by-step explanation:
In a parallelogram, the opposite sides are congruent. Using this fact, we can create equations for both problems.
21)

Subtract 18.

Divide by 2.

23)

Add 3.

Divide by 2.

Answer:
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Step-by-step explanation: