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emmainna [20.7K]
3 years ago
14

Help will mark brain list if correct

Mathematics
1 answer:
Gre4nikov [31]3 years ago
7 0

Answer:

1) 80%

2) 95%

3) 33 \frac{1}{3}%

4) 15%

Step-by-step explanation:

1) 4 of 5 must be written as a percent over 100 so you divide,  

5 ÷ 100 = 20 so 20 * 4 = 80% so the answer is 80%

2) 19 of 20 must be written as a percent over 100 so you divide,

19 ÷ 20 = 0.95 so the answer is 95%

3) 50 of 150 must be written as a percent over 100 so you divide,

50 ÷ 150 = 0.33 so the answer is 33 \frac{1}{3}%

4) 6 of 40  must be written as a percent over 100 so you divide,

6 ÷ 40 = 0.15 so the answer is 15%

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Find the average rate if change in the function f(x) = x^2 +2 over the interval x= -5 to x= -2
jeka94

Average rate of change of function f(x) = x^2 +2 over the interval x= -5 to x= -2 is -7

Step-by-step explanation:

We need to find the average rate if change in the function f(x) = x^2 +2 over the interval x= -5 to x= -2

The formula used to find the change of average rate is:

Rate\,\,of\,\,change=\frac{f(b)-f(a)}{b-a}

Where b= -2 and a= -5

Finding f(b) and f(a)

f(b)=f(-2)=(-2)^2+2=4+2=6

f(a)=f(-5)=(-5)^2+2=25+2=27

Putting values in the formula:

Rate\,\,of\,\,change=\frac{f(b)-f(a)}{b-a}\\Rate\,\,of\,\,change=\frac{6-27}{(-2)-(-5)}\\Rate\,\,of\,\,change=\frac{-21}{-2+5}\\Rate\,\,of\,\,change=\frac{-21}{3}\\Rate\,\,of\,\,change=-7

Average rate of change of function f(x) = x^2 +2 over the interval x= -5 to x= -2 is -7

Keywords: Average Rate of change

Learn more about Average Rate of change at:

  • brainly.com/question/10699220
  • brainly.com/question/3071107
  • brainly.com/question/13053630

#learnwithBrainly

4 0
3 years ago
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