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2 years ago

What is the percent of change if 38 is decreased to 25? round to the nearest whole number

Mathematics

1 answer:

motikmotik2 years ago

7 0

Answer:

7.89474% decrease

Step-by-step explanation:

Solution:

Calculate percentage change

from V1 = 38 to V2 = 35

(V2−V1)|V1|×100

=(35−38)|38|×100

=−338×100

=−0.0789474×100

=−7.89474%change

=7.89474%decrease

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Solve for t: t ÷ 5 = 8

DIA [1.3K]

Answer:

Step-by-step explanation:

Equation is t÷5=8

first you multiply 5 on each to cancel it out

t÷5*5=8*5

solve to get

t=40

8 0

4 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

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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

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3 years ago

Two sporting goods stores are having discount sales on basketballs at one store a basketball is on sale for 25% off the regular

Reil [10]

Answer:

0.66

Step-by-step explanation:

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24.94 - 6.23 = 18.72

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25.80 - 7.74 = 18.06

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3 years ago

Read 2 more answers

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ehidna [41]

Answer:

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3 years ago

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IgorC [24]

Answer:light blue

Step-by-step explanation:

7 0

3 years ago