Please help me!!!!!
2 answers:
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Answer:
1.) y= +
2.) y = - 3
3.) y = 3x - 2
4.) y = - 8
5.) y = + 4
6.) y = 9x - 1
7.) y = - - 4
8.) y = - + 2
9.) y = - 1
10.) y = -5
(side note: your formula C = 2πr^2 is incorrect, it should be C = 2πr)
Answer:
r = 9
Step-by-step explanation:
First let's find the circumference of Circle A. To use the formula we need radius. Since we have a diameter just divide by 2 to get radius. 27 / 2 = 13.5
Now plug that into C = 2πr: 2π*(13.5) = 27π
The question says that the area of circle B is 3x this value, so Circle B's area must be: 27π * 3 = 81π
Now plug that into A = πr^2 and solve for r:
(edited to correct a brain fart)