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2 years ago

Simplify the expression by combining like terms. -8y + 2 + 10y - 7 Please help

Mathematics

2 answers:

Alecsey [184]2 years ago

8 0

Answer:

<u>2y - 5 (read below)</u>

Step-by-step explanation:

-8y + 10y = 2y

2 + (-7) = -5

Your expression could/would be:

2y - 5.

Hope this helps!

Sliva [168]2 years ago

7 0

Answer:

you can combine -8y and 10y since 8 is negative it would be =2y

an you can do 2+-7=-5

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(a) The sample sizes are 6787.

(b) The sample sizes are 6666.

Step-by-step explanation:

(a)

The information provided is:

Confidence level = 98%

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$\hat p_{1} = \hat p_{2} = \hat p = 0.50\ (\text{Assume})$

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(b)

Now it is provided that:

$\hat p_{1}=0.45\\\hat p_{2}=0.58$

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$MOE=z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})+\hat p_{2}(1-\hat p_{2})}{n}$

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Thus, the sample sizes are 6666.

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nlexa [21]

Answer:

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Step-by-step explanation:

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