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nexus9112 [7]
3 years ago
13

7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)

Mathematics
2 answers:
sesenic [268]3 years ago
7 0

Answer :

m = 13.4/4.65

Step by step :

7.8 + 2(0.75m + 0.4) = -6.4m + 4(0.5m - 0.8)

7.8 + 2.75m + 0.8 = -6.4m + 4.5m - 4.8

2.75m + 6.4m - 4.5m = -7.8 - 0.8 - 4.8

4.65m = 13.4

m = 13.4/4.65

Pavel [41]3 years ago
7 0

Answer:

B

Step-by-step explanation:

She is incorrect because when substituting 2 for m the result was a false statement.

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The values of the functions are -1/ 4, 3/ 16 and 3/ 8 respectively.

<h3>What is a function?</h3>

A function is a rule or expression showing the relationship between a dependent and independent variable.

We have the function to be;

f(x) = 3/ 4(x + 2)

Let's find f(-5), substitute the value of x as -5

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f(2), substitute the value of x as  2

f(2) = 3/ 4(2 + 2)

f(2) = 3/ 4 (4)

f(2) = 3/ 16

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f(4) = 3/ 4(6)

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Thus, the values of the functions are -1/ 4, 3/ 16 and 3/ 8 respectively.

Learn more about functions here:

brainly.com/question/4025726

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