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3 years ago

3x+2=x+10 what is the answer to this equation

Mathematics

2 answers:

marysya [2.9K]3 years ago

6 0

Answer:

x= 4

Step-by-step explanation:

Harrizon [31]3 years ago

3 0

Answer:

x=4

let me know if u need the steps

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How to do steps in a division problem of 616 divided by 2

leva [86]

Answer:

308

Step-by-step explanation:

616÷2 ***************************

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3 years ago

Tyler surveys his classmates to determine the number and type of pets they have. The frequency table below shows this data.Based

kodGreya [7K]

I would saybar chart because it is a set amount of data

3 0

3 years ago

Read 2 more answers

Round to the nearest hundredth

Charra [1.4K]

Hey there,
1st hat = x
2nd hat = 2x
3x = $75.12
x= $75.12 / 3
= $25.04
2x = $25.04 x 2
=$50.08
= $50.10 (round off)

Hope this helps ^_^

~Top

7 0

3 years ago

The weight of an adult swan is normally distributed with a mean of 26 pounds and a standard deviation of 7.2 pounds. A farmer ra

Snezhnost [94]

Let $X$ denote the random variable for the weight of a swan. Then each swan in the sample of 36 selected by the farmer can be assigned a weight denoted by $X_1,\ldots,X_{36}$ , each independently and identically distributed with distribution $X_i\sim\mathcal N(26,7.2)$ .

You want to find

$\mathbb P(X_1+\cdots+X_{36}>1000)=\mathbb P\left(\displaystyle\sum_{i=1}^{36}X_i>1000\right)$

Note that the left side is 36 times the average of the weights of the swans in the sample, i.e. the probability above is equivalent to

$\mathbb P\left(36\displaystyle\sum_{i=1}^{36}\frac{X_i}{36}>1000\right)=\mathbb P\left(\overline X>\dfrac{1000}{36}\right)$

Recall that if $X\sim\mathcal N(\mu,\sigma)$ , then the sampling distribution $\overline X=\displaystyle\sum_{i=1}^n\frac{X_i}n\sim\mathcal N\left(\mu,\dfrac\sigma{\sqrt n}\right)$ with $n$ being the size of the sample.

Transforming to the standard normal distribution, you have

$Z=\dfrac{\overline X-\mu_{\overline X}}{\sigma_{\overline X}}=\sqrt n\dfrac{\overline X-\mu}{\sigma}$

so that in this case,

$Z=6\dfrac{\overline X-26}{7.2}$

and the probability is equivalent to

$\mathbb P\left(\overline X>\dfrac{1000}{36}\right)=\mathbb P\left(6\dfrac{\overline X-26}{7.2}>6\dfrac{\frac{1000}{36}-26}{7.2}\right)$
$=\mathbb P(Z>1.481)\approx0.0693$

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3 years ago

Write a problem that can be solved by comparing feet and inches using a model.Include a solution.Explain why you are changing fr

Oduvanchick [21]

Change any number of feet to inches. Every foot is equal to 12 inches. So multiply the number of feet you have by 12.
Ex. 5 feet= 60inches

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3 years ago