20 + 12k - 76 - 8 Help me please

Mathematics

2 answers:

Hunter-Best [27]4 years ago

8 0

Answer:

12 + 5k

Step-by-step explanation:

=> 20 + 12k - 7k - 8

=> 20 - 8 + 12k - 7k

=> 12 + 5k

Hence correct answer is 12 + 5k.

shtirl [24]4 years ago

5 0

Step-by-step explanation:

20 + 12k - 76 - 8

-64 + 12k

-4( 16 - 3k )

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What is the average rate of change of the function over the interval x = 0 to x = 8?

goblinko [34]

Answer:

-13/400

Step-by-step explanation:

The pertinent formula is

change in f(x) over [a, b] f(8) - f(0)

a. r. of change = --------------------------------------- = ----------------

change in x over [a, b] 8 - 0

Continuing these calculations, we get:

2(8) - 2 2(0) - 2 14/8 -2/8

(1/8) -------------- - (1/8) ------------- = ----------- - -----------

5(8) - 6 5(0) - 6 40 - 6 -6

7/4 1/4

This simplifies to average rate of change = ------- - --------

34 6

7 1

= ------------- - ---------- = -13/400

136 24

8 0

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monitta

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Step-by-step explanation: