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goldenfox [79]
3 years ago
8

Solve.1) (-85) ÷ 20 =2] 100 ÷ 60 =​

Mathematics
1 answer:
Serhud [2]3 years ago
4 0

- 85 \div 20 =  - 4 \frac{1}{4}  =  - 4.25

100 \div 60 =  \frac{5}{3}  = 1 \frac{2}{3}

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Read 2 more answers
Find the average rate of change of f(x) = 4x² – 3 from 3 to 9.
Lina20 [59]

Answer:

44

Step-by-step explanation:

Given:

f(x) = 4x^2 - 3

Required:

Average range of change from 3 to 9

SOLUTION:

Step 1:

Find f(3) and f(9):

To find f(3), replace x with 3 in the given function

f(3) = 4(3)^2 - 3

f(3) = 4(9) - 3

f(3) = 36 - 3

f(3) = 33

To find f(9), replace x with 9 in the given function

f(9) = 4(9)^2 - 3

f(9) = 4(81) - 3

f(9) = 324 - 3

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Where,

a = 3, f(a) = 33

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= \frac{321 - 33}{9 - 3}

= \frac{288}{6}

= 44

Average rate of change = 44

3 0
3 years ago
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