a = 2πr² + 2πrh
a - 2πr² = 2πrh
(a - 2πr²)/2πr = 2πrh/2πr
h = (a - 2πr²)/2πr
Hi!
So let's start with some variables.
w is width
L is length.
The length is 4 less than 5 times the width. Let's put that into an equation.
L = 5w - 4
The perimeter is 76.
The perimeter is L + L + w + w or
perimeter = 2L + 2w.
Which means that 1/2 of the perimeter = L + w.
We know the perimeter is 76, so half of 76 is 38.
38 = L + W.
Let's put length in terms of width and plug in the previous equation.
38 = 5w - 4 + w
Add the same variables
38 = 6w - 4
simplify
42 = 6w
w = 7
And plug that into the length equation that we had above to get
L = 35 - 4
L = 31
The correct answer is C: 7, 31
Answer:
15stars
Step-by-step explanation:
sally = 7
mike = 7+1 =8
so...
7+8=15
y = 20 + 2.5x
have to write more or I cant post this
Answer:
5(3 + 13)
Step-by-step explanation: