Answer:
f(r) = 2πr
Step-by-step explanation:
You know the formula for circumference in terms of radius is ...
C = 2πr
You are being asked to write this as a function named "f". That will be ...
f(r) = 2πr
Answer: 21?
Step-by-step explanation: if the ratio is 7:5 and its now x:15 and 15 divided by 5 is three so you have to multiply 7 by three to.
Answer:
B=70
Step-by-step explanation:
A+B=180
5x+25+3x+19=180
8x+44=180
8x=136
x=17
B=3(17)+19
B=51+19
B=70
Answer:
y = 
Step-by-step explanation:
Given y is inversely proportional to x² then the equation relating them is
y = 
← k is the constant of proportion
To find k use an ordered pair from the table
Using x = 3 when y = 1 , then
1 = 
= 
( multiply both sides by 9 )
9 = k
y = ← equation of proportion
