3 years ago

Which form of equation models the data if a is a negative integer and b is a positive integer?

Mathematics

1 answer:

ratelena [41]3 years ago

7 0

Answer: c

Step-by-step explanation:

You can notove that this form makes sense

If we replaxe a by -2 abd b by 7 we get the data modeled in the graph

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Answer:

4 cu. units

Step-by-step explanation:

1/3x2x2x3=4 cu. units

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On a test that has a normal distribution, a score of 19 falls one standard deviation below the mean, and a score of 40 falls two

nexus9112 [7]

Hi there!

We can use the following equation:

$\large\boxed{z = \frac{x-\mu}{\sigma}}$

z = amount of standard deviations away a value is from the mean (z-score)

σ = standard deviation

x = value

μ = mean

Plug in the knowns for both and rearrange to solve for the mean:

$-1 = \frac{19-\mu}{\sigma}\\\\-\sigma = 19 - \mu\\\\ \sigma = -19 + \mu$

Other given:

$2 = \frac{40-\mu}{\sigma}\\\\2\sigma = 40- \mu\\\\ \sigma = 20 - \frac{\mu}{2}$

Set both equal to each other and solve:

$-19 + \mu = 20 - \frac{\mu}{2}\\\\\frac{3\mu}{2} = 39 \\\\3\mu = 78 \\\\\boxed{\mu = 26 }$

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2 years ago

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julsineya [31]

Answer:

for the first question

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3 years ago

Of the numbers listed below, which are<br> NOT multiples of 4?<br> 2, 4, 7, 8, 12, 15, 19, 24, 34

Vedmedyk [2.9K]

Answer: a multiple is a number that can be divided by another number without a remainder.

Step-by-step explanation: so what is not a multiple of four would be 2, 7, 15 19, 34.

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victus00 [196]

Answer:

Step-by-step explanation:

It cannot be A or B because you already have both of your angles, and it cannot be C because the sides do not line up. By the process of elimination it will be D.

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