We have to add 8/15 to 2/5.
To add two fractions we have to make them have the same denominator, so we have to convert 2/5 to have a denominator of 15. To do this, we have to multiply 2/5 by 3 and then we can add the fractions:

Answer: 14/15
It’s 16
You would multiply height (4) by the base (length(2) x width(2)=4) which is 16
Answer:
False, since x values cannot have more than one y value.
Step-by-step explanation:
It can be a fraction, a decimal, a mixed number, or any irrational number.
Answer:
Circumference = 65.97344573
Step-by-step explanation:
Given the diameter of a circle, we can use the formula C = πd to find the circumference.
C = circumference
π = pi
d = diamater
Equation: 21(π) = 65.97344573
Make sure to round to whatever decimal place is asked for!