Answer:
I think the 1st one im not really sure tho
Step-by-step explanation:
We have been given gross domestic product (in billions of dollars) can be approximated by
.
(a) In this part, we need to compute the derivative of this function:


(b) In this part, we need to find the value of P'(45). So, we will substitute t=45
Billion dollars per year.
(c) P'(45)=462.39 represents that 45 years after 1960, that is, in 2005, the GCP was changing at a rate of 462.39 billion dollars per year.
Answer:
the answer will be 86%
Step-by-step explanation:
first you (70x30=2100)
20x62=1240
2100-1240=860
and finally
you say 860÷10=86%
.
<u>Find Radius:</u>
Radius = Diameter ÷ 2
Radius = 4 ÷ 2 = <u>2 in</u>
.
<u>Find Surface Area:</u>
Surface Area = 2πr² + 2πrh
Surface Area = 2π(2)² + 2π(2)(3)
Surface Area = 8π + 12π
Surface Area = 2<u>0π in²</u>
.
Answer: 20π in²
.