7x-2=-23 add 2 to both sides to get 7x by itself
7x=-23+2 now add the right side
7x=-21 now divide both sides by 7
x=-21/7
x=-3
Answer:
Step-by-step explanation:
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Answer:
columns i think is the answer hope it helps
Step-by-step explanation:
Answer:

Step-by-step explanation:
step 1
Find the radius of the circle
we know that
The circumference is equal to

we have

substitute

Solve for r

step 2
Find the area
The area of a circle is equal to

we have

substitute

