36, because the square root of 4 is 2 and the square root of 81 is 9. You multiply those and then double it to get 36.
Answer: y=−10
Step-by-step explanation: GIVE ME BRAINLIEST HOPE THAT HELPED
Answer:
4. About 2,700 in2
Step-by-step explanation:
The area of a circle (
), measured in square inches, is directly proportional to the square of its diameter (
), measured in inches. That is:


Where
is the constant of proportionality, dimensionless.
In consequence, the following relationship between circles A and B is obtained:

The area of the circle B is now cleared:

Given that
,
and
, then:


Therefore, the correct answer is 4.
Answer:
3n + 5
Step-by-step explanation:
what do u mean by is it true or false?