Step-by-step explanation:
r=21cm
a=135
perimeter=2r+ar
=2×21+135×21
=42+2835
=2877cm
Answer:
x/3 + 6 = 14
Step-by-step explanation:
Answer:
300%
Step-by-step explanation:
![\frac{225}{75} = \frac{y}{100}](https://tex.z-dn.net/?f=%5Cfrac%7B225%7D%7B75%7D%20%3D%20%5Cfrac%7By%7D%7B100%7D)
225 × 100 = 75 × y
22500 = 75y
75y ÷ 75 = 22500 ÷ 75
y = 300
300%
Here is a formula for most percent problems.
I don't know this but I will say C.
15.8% would round to 16%
If the number after the decimal point is 5 or greater you round the 5 up to a 6. If it had been less than a 5 it would have rounded down to 15%.