Answer:
=
Step-by-step explanation:
Simplify the fractions:
1/2 is already in simplest form.
(5/10)/(5/5) = 1/2
1/2 = 1/2 ∴ 1/2 = 5/10
~
Answer:

Step-by-step explanation:
The surface area of the cone shaped roof is:


The cost of roofing per square feet is: (USD stands for US dollar)


Answer:
20%
Step-by-step explanation:
18/90 = .2
Decimal to Percentage Rule: Multiply by 100
.2 * 100 = 20
20%
Hope this helps! Have a nice day!
Answer:
L = 50 * (-0.4)^(n - 1)
Step-by-step explanation:
r = t2/t1 = -20/50 = - 0.4
a = 50
L = 50 * (r)^(n - 1) Let's see if we can get the answer when n = 3
L=50 * (-0.4)^(3 -1)
L =50* (-0.4)^2
L = 50 * 0.16
L = 8 which is correct