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Helga [31]
3 years ago
15

7y-5(-3y-8) simplify

Mathematics
2 answers:
Nookie1986 [14]3 years ago
5 0
This is a simplified expression

rusak2 [61]3 years ago
4 0

The answer is 22y + 40

Here's how I got my answer:

Step 1: Expand to 7y + 15y + 40

Step 2: Simplify 7y + 15y to get your answer, 22y + 40

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Can you guys help with these questions??
Lostsunrise [7]

Answer:

Step-by-step explanation:

<3 = 55° ( vertically opposite angles )

<4 = 180 - 105 = 75° ( linear pair )

<5 = 180 - ( 55 + 75 ) ( angle sum property of a triangle )

    = 180 - 130

    = 50°

<1 = <2 ( angles opposite to equal sides )

let < 1 and < 2 be x

55 + 2x = 180 ( angle sum property of a triangle )

2x = 180 - 55

2x = 125

x = 125 / 2

x = 62.5

therefore, < 1 = <2 = 62.5°

Hope this helps

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3 years ago
Consider the following least squares specification between test scores and the student - teacher ratio: TestScore = 557.8 + 36.4
GenaCL600 [577]

Answer:

Test score_i= 557.8 +36.42 Income

If we increase the income by 1% that means that the new income would be 1.01 the before one and if we replace this we got:

Test score_f = 557.8  + (36.42* 1.01 Income)= 557.8 +36.7842 Income

And the net increase can be founded like this:

Test score_f -Tet score_i = 557.8 +36.7842 Income- [557.8 +36.42 Income] = 36.7842 Income -36.42 Income = 0.3642

So then the net increase would be:

C. 0.36 points

Step-by-step explanation:

For this case we have the following linear relationship obtained from least squares between test scores and the student-teacher ratio:

Test score_i= 557.8 +36.42 Income

If we increase the income by 1% that means that the new income would be 1.01 the before one and if we replace this we got:

Test score_f = 557.8  + (36.42* 1.01 Income)= 557.8 +36.7842 Income

And the net increase can be founded like this:

Test score_f -Tet score_i = 557.8 +36.7842 Income- [557.8 +36.42 Income] = 36.7842 Income -36.42 Income = 0.3642

So then the net increase would be:

C. 0.36 points

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b

Step-by-step explanation:

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Answer: they are parallel

Step-by-step explanation:

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Answer:

3 times 4

Step-by-step explanation:

3 groups of 4...............

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