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andrew11 [14]
3 years ago
11

PLEASE HELP!!! simplify 3(x-5) + 4x

Mathematics
1 answer:
Lerok [7]3 years ago
5 0
3(x-5) + 4x
3x - 15 + 4x
7x - 15
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2y² - 9y - 2 + 4 (y + 1) =​
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2 {y}^{2}  - 9y - 2 + 4(y + 1) =

2 {y}^{2}  - 9y - 2 + 4y + 4 =

2 {y}^{2}  - 9y + 4y - 2 + 4 =

Collect like terms

2 {y}^{2}  - 5y + 2 =

(2y  - 1 )(y - 2)

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Answer:

\boxed{\ the \ corresponding\  point\  is \ (-6,7)\ }

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Based on the sample of n = 25 healthy-weight students, can you conclude that healthy-weight students eat significantly fewer fat
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Answer:

z = -1.645

Step-by-step explanation:

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Check attachment for the formula that should br here.

z = \frac{4.01- 4.22 }{0.60 /\sqrt{25}}

= -1.75

The critical value of z = -1.645

The calculated value z > The critical value of z

Hence we reject null hypothesis.

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