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3 years ago

I need help , plz help me and the question just like other one I think ?

Mathematics

1 answer:

ad-work [718]3 years ago

4 0

Answer:

formula = LxWxH

substitute = L = 10 in W = 7in H = 14 in

simply = 980

Step-by-step explanation:

since its a rectangle you multiply all the sides together.

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Ben got a part-time job.his mom said he must save at least two-thirds of his weekly paycheck,and can spend the rest. if he wishe

Viefleur [7K]

So 2/3 of 120 is 80
120-80=40 So it's
120

6 0

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:

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

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

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

6 0

3 years ago

Help me please! Literally don’t understand the question.

andrey2020 [161]

I think it's d hope it helps

6 0

3 years ago

Read 2 more answers

An artist is painting the outside of the box shown below. The top and bottom will NOT be painted. What is the total surface area

Montano1993 [528]

Answer:

15 square feet

Step-by-step explanation:

Multiply 1.5 by 3 which equals 4.5

Multiply 1.5 by 2 which equals 3

Add the above answers (4.5 plus 3)

Then multiply by 2 (7.5 times 2)

It equals 15

I hope this helps and that this is the right problem. There is no picture shown but I just did this problem for someone else so I thought I would take a shot at it :)

3 0

2 years ago

Please help me with this. This problem is actually making my life worst at the moment. Please, someone, help me.

Xelga [282]

OMG !!!!!!! I HAVE THE SAME QUESTION TO ASK

7 0

3 years ago