Answer:
Part 1) The area of the circle is 
Part 2) The circumference of the circle is 
Step-by-step explanation:
step 1
The area of a circle is equal to

we have
---> the radius is half the diameter

substitute


step 2
The circumference of a circle is equal to

we have

substitute


Answer:
Step-by-step explanation:
t2/t1=r
-10/2=-5
2*-5=-10
Answer:
6x - 9
3(2x−3)
2a(5b+3)
Step-by-step explanation:
Factor 6a+10ab
10ab+6a
Factor 6x−9
6x−9
=3(2x−3)
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Step-by-step explanation:
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Answer:
x = 126/999
Step-by-step explanation:
Let x = .126126126 repeating
Multiply each side by 1000
1000x = 126.126126126 repeating
subtract the first equation from the second
1000x = 126.126126126 repeating
- x = .126126126 repeating
999x = 126
Divide each side by 999
999x/999 = 126/999
x = 126/999