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3 years ago

Math am I right, well i need this asap. thanks for all the help!

Mathematics

1 answer:

monitta3 years ago

5 0

Answer:

Step-by-step explanation:

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I NEED HELP!! WILL MARK BRAINLIEST!!!!

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Answer:

$-\frac{1}{32}$

the answer is A

Step-by-step explanation:

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Which is the correct formula to find the area of ABC?

Alex777 [14]

Answer:

none of them

Step-by-step explanation:

The area (A) of a triangle is calculated as

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Step-by-step explanation:

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3 years ago

The distribution of IQ scores can be modeled by a normal distribution with mean 100 and standard deviation 15.

evablogger [386]

Answer:

4.4% of the population with IQ between 120 and 125.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 15

We are given that the distribution of IQ scores is a bell shaped distribution that is a normal distribution.

a) Let X be a person's IQ score.

Then, density functions for IQ scores is given by:

$P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{z^2}{2}}\\\\\text{where,}\\\\z = \frac{x-\mu}{\sigma}\\\\P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{(x-\mu)^2}{2\sigma^2}}\\\\P(x) = \displaystyle\frac{1}{2\sqrt{2\pi}}e^{-\frac{(x-100)^2}{450}}$

b) P(population with IQ between 120 and 125.)

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

$P(120 \leq x \leq 125) = P(\displaystyle\frac{120 - 100}{15} \leq z \leq \displaystyle\frac{125-100}{15}) = P(1.33 \leq z \leq 1.66)\\\\= P(z \leq 1.66) - P(z < 1.33)\\= 0.952 - 0.908 = 0.044 = 4.4\%$

$P(120 \leq x \leq 125) = 4.4\%$

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3 years ago

What is 10% of 360? 18 36 90 180

Snowcat [4.5K]

Answer:

Step-by-step explanation:

10% of 360=10/100*360=1/10*360=360/10=36

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