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3 years ago

What is the greatest common factor of 15xz and 45xz

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

5 0

Answer:

15xz

Step-by-step explanation:

Its 15xz because they are both divisible by it, and you cant go higher than 15

Papessa [141]3 years ago

4 0

15 is the GCF.

15: 1,3,5,15

45: 1,3,5,9,15,45

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A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a

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Answer:

The point estimate for $\mu$ is 8.5 hours.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , a large sample size can be approximated to a normal distribution with mean $\mu$ and standard deviation $\frac{\sigma}{\sqrt{n}}$ .

In this problem

We are working with a sample of 81 adults, so the point estimae of the mean is the mean number of weekly hours that U.S. adults use computers at home.

So, the point estimate for $\mu$ is 8.5 hours.

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3 years ago

Write the equation in slope intercept form with a slope of 3/4 and passes through (-4,-5)

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Answer:Use the slope −2 and the point (−4,−5) to find the y-intercept.

y=mx+b

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⇒−5=8+b

⇒b=−13

Write the equation in slope intercept form as:

y=mx+b

⇒y=(−2)x−13

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Step-by-step explanation:

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3 years ago

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2 years ago

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Population Growth Using 20th-century U.S. census data,

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The population of Ohio will be 10 million in the year 1970

The population growth of Ohio is represented by the function:

$P(t)=\frac{12.79}{1+2.402e^{-}0.0309t}$

P is the population in millions

t is the number of years since 1900

To find the year that the population of Ohio will be 10 million, substitute P = 10 into the function P(t) and solve for t

$10=\frac{12.79}{1+2.402e^{-}0.0309t}\\\\10(1+2.402e^{-}0.0309t)=12.79\\\\1+2.402e^{-}0.0309t=\frac{12.79}{10} \\\\1+2.402e^{-}0.0309t=1.279\\\\2.402e^{-}0.0309t=1.279-1\\\\2.402e^{-}0.0309t = 0.279\\\\e^{-}0.0309t =\frac{0.279}{2.402} \\\\e^{-}0.0309t =0.116\\\\-0.0309t=ln0.116\\\\-0.0309t=-2.154\\\\t=\frac{-2.154}{-0.0309} \\\\t=69.7$

t = 70 years (to the nearest whole number)

70 years after 1900 will be 1970

Therefore, the population of Ohio will be 10 million in the year 1970

Learn more here: brainly.com/question/25504185

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Answer: c

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3 years ago