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3 years ago

Factor Completely. 30r^2 + 30r + 75.

Mathematics

1 answer:

kari74 [83]3 years ago

6 0

Answer:

15(2r^2+2r+5)

Step-by-step explanation:

I'm more of a guess and check type of person, but 15 x 2r^2 = 30r^2, 15 x 2r = 30r, and 15 x 5 = 75

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Agata [3.3K]

Answer:

Step-by-step explanation:

Given

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3 years ago

What is the equation of the line represented by the table of values?

vredina [299]

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Explanation:

y=x-2 is the choice that satisfies all the points in the table. This can be verified case by case:

y=x-2

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3 years ago

2/3y = 4/5 solve the equation using inverse operations

Alisiya [41]

Answer:

y=6/5

Step-by-step explanation:

Hope this helps! Sorry if its wrong

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3 years ago

A data set has a mean of 112 and a standard deviation of 2.5.

Ahat [919]

Answer with explanation:

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Standard Deviation of the data set $\sigma$ =2.5

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Z at 50% = 0.1915

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$=Z_{50 \text{percent}}\times\frac{\sigma}{\sqrt{\mu}}\\\\=0.1915 \times \frac{2.5}{\sqrt{112}}\\\\=0.1915 \times \frac{2.5}{10.58}\\\\=0.1915 \times 0.2362\\\\=0.0452$

Margin of error=0.045(approx)

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4 years ago

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jarptica [38.1K]

Look at the attached picture

Hope it will help you

Good luck on your assignment

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3 years ago