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3 years ago

Factor the following expression using the GCF. 4dr – 16r r

Mathematics

2 answers:

AveGali [126]3 years ago

8 0

The greatest common factor is 4r so

4r(d-4)

xxMikexx [17]3 years ago

7 0

4dr-16r

Remember, the first step in doing this is finding the GCF, or greatest common factor.

Look at both equations, and see what it is.

We see that it is 4.

Look for any variables that are found in both numbers.

r is found in both numbers, so 4r is the GCF.

4dr-16r

What is 4r divided by 4dr? It would be d.

What is -16r divided by 4r? -4

So, our equation now looks like this:

4r(d-4)

So, the last one is correct.

~Hope I helped!~

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umka2103 [35]

Answer:

Use the slope formula (y2-y1)÷(x2-x1)

Step-by-step explanation:

(-5-(-3))÷2-3

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2 years ago

Is –54 ÷ 6 positive or negative?

Zigmanuir [339]

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Step-by-step explanation:

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3 years ago

Please help me thanks please

tatiyna

Answer: 2827 cm squared is the answer

4 0

2 years ago

The length of a rectangular frame is 15 inches, and the width of the frame is 88 inches. What is the length of a diagonal of thi

qaws [65]

Answer:

about 89.27 inches

Step-by-step explanation:

This is a right triangle question

c^2 = a^2 + b^2

c^2 = 15^2 + 88^2

c^2 = 225 + 7744

c^2 = 7969

Take the square root of both sides

c = 89.2692556259

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5 0

2 years ago

In 2006, 95% of new cars in the US came with a spare tire. In 2017, 72% came with a spare tire.

MArishka [77]

Using the Central Limit Theorem, it is found that:

The mean is 0.23.

The standard deviation is $s = \sqrt{\frac{0.95(0.05)}{250} + \frac{0.72(0.28)}{250}}$ .

<h3>Central Limit Theorem</h3>

It states that for a <u>proportion p in a sample of size n</u>, the sampling distribution of sample proportions has mean $p$ and standard deviation $s = \sqrt{\frac{p(1 - p)}{n}}$

When two variables are subtracted, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

In 2006, 95% of new cars in the US came with a spare tire, with a sample of 250, hence:

$p_1 = 0.95, s_1 = \sqrt{\frac{0.95(0.05)}{250}}$

In 2017, 72% of new cars in the US came with a spare tire, with a sample of 250, hence:

$p_2 = 0.72, s_2 = \sqrt{\frac{0.72(0.28)}{250}}$

Hence, for the distribution of differences:

$p = p_1 - p_2 = 0.95 - 0.72 = 0.23$

$s = \sqrt{s_1^2 + s_2^2} = \sqrt{\frac{0.95(0.05)}{250} + \frac{0.72(0.28)}{250}}$

To learn more about the Central Limit Theorem, you can take a look at brainly.com/question/16695444

7 0

2 years ago