Answer:
6 cm
Step-by-step explanation:
A = 4πr^2
4πr^2 = 36π cm^2
r^2 = 9 cm^2
r = 3 cm
d = 2r = 6 cm
X + 5y = 1 . . . . (1)
8x - 2y = 3 . . . .(2)
Solution 1.
From (1), x = 1 - 5y
substituting for x in (2), we have:
8(1 - 5y) - 2y = 3
8 - 40y - 2y = 3
8 - 42y = 3
42y = 5
y = 5/42
x = 1 - 5(5/42) = 1 - 25/42 = 17/42.
Solution 2.
Multiply (1) by 8, to get:
8x + 40y = 8 . . . . . (3)
(3) - (2) = 40y - (-2y) = 8 - 3
42y = 5
y = 5/42
substitute for y into (3), to get:
8x + 40(5/42) = 8
8x + 100/21 = 8
8x = 8 - 100/21 = 68/21
x = (68/21)/8 = 17/42
MY answer is #4 4.3 Times 107
Hi there! I’m here to help you out with your question.
It costs Joseph 2.9% per year in interest.
This is a one step process, do 60 (money he invests) x .029 (interest) and you should get $1.74.
Add $1.74 + $60, and your answer is $61.74.
Thank you and I hope this helped you.