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3 years ago

Which property would you use to simplify the following expression 3×(y+5)

Mathematics

2 answers:

klio [65]3 years ago

8 0

You would use multiplication

guajiro [1.7K]3 years ago

6 0

Answer:

Distributive property.

Step-by-step explanation:

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Samantha has 3 cats. She has 10 treats left in the pantry for them. If she splits the treats equally among the 3 cats, how many

dezoksy [38]

Answer:

3 treats each.

Step-by-step explanation:

3 cats divided by 10 = 9 remainder 1 and 3 times 3 = 9.

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3 years ago

The following polynomial is defined on the interval [-2, 2]:

Bess [88]

Answer:

Using Matlab code for Fourier series to calculate for the function, see the attached

Step-by-step explanation:

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3 years ago

Sold 685 boxes of cookies about how many boxes are they sold rounded to the nearest ten

MissTica

Answer:

690

Step-by-step explanation:

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3 years ago

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VikaD [51]

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Step-by-step explanation:

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2 years ago

A random variable X follows the uniform distribution with a lower limit of 670 and an upper limit of 750.a. Calculate the mean a

DENIUS [597]

You can compute both the mean and second moment directly using the density function; in this case, it's

$f_X(x)=\begin{cases}\frac1{750-670}=\frac1{80}&\text{for }670\le x\le750\\0&\text{otherwise}\end{cases}$

Then the mean (first moment) is

$E[X]=\displaystyle\int_{-\infty}^\infty x\,f_X(x)\,\mathrm dx=\frac1{80}\int_{670}^{750}x\,\mathrm dx=710$

and the second moment is

$E[X^2]=\displaystyle\int_{-\infty}^\infty x^2\,f_X(x)\,\mathrm dx=\frac1{80}\int_{670}^{750}x^2\,\mathrm dx=\frac{1,513,900}3$

The second moment is useful in finding the variance, which is given by

$V[X]=E[(X-E[X])^2]=E[X^2]-E[X]^2=\dfrac{1,513,900}3-710^2=\dfrac{1600}3$

You get the standard deviation by taking the square root of the variance, and so

$\sqrt{V[X]}=\sqrt{\dfrac{1600}3}\approx23.09$

8 0

3 years ago

Which property would you use to simplify the following expression 3×(y+5)​

Which property would you use to simplify the following expression 3×(y+5)