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Veseljchak [2.6K]
4 years ago
10

51pts! which expression represents a difference of squares?

Mathematics
2 answers:
m_a_m_a [10]4 years ago
7 0

Answer:

A.

Step-by-step explanation:

81 - 49y^2 = (9 - 7y)(9 + 7y)

FOIL the equation.

(9 - 7y)(9 + 7y)

81 + 63y - 63y - 49y^2

81 - 49y^2

maw [93]4 years ago
7 0

Answer:Help me too!

Step-by-step explanation:

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Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. Much o
Art [367]

Answer:

The value will be used as the point estimate for the mean endowment of all private colleges in the United States is of 180.975 millions of dollars.

Step-by-step explanation:

When we have a sample, the mean of the sample is used as the point estimate for the mean of the entire population.

What value will be used as the point estimate for the mean endowment of all private colleges in the United States?

We have to find the mean of the 8 colleges. So

M = \frac{60.2 + 47.0 + 235.1 + 490.0 + 122.6 + 177.5 + 95.4 + 220.0}{8} = 180.975

The value will be used as the point estimate for the mean endowment of all private colleges in the United States is of 180.975 millions of dollars.

4 0
3 years ago
What is 1,144,646 rounded to the nearest million
marta [7]

Answer:

1,000,000

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
What is the area of the following?<br> Height: 3x2 - 2x - 6<br> (4x)<br> (4x)<br> (4x)
mestny [16]

The area of the rectangle shown is expressed as 4x² - 2x  - 6

The diagram is attached below:

Area of a rectangle = Length * width

From the diagram;

Length = 4x - 6

Width = x+1

Substitute the given parameters into the formula as shown:

Area = 4x-6(x+1)

Area = 4x(x) + 4x (1) - 6x - 6

Area = 4x² + 4x - 6x - 6

Area = 4x² - 2x - 6

Hence the area of the rectangle shown is expressed as 4x² - 2x  - 6

Learn more here: brainly.com/question/20968176

8 0
3 years ago
Its 5th grade math so yea HELP​
tekilochka [14]

Answer:

The answer is B.

Step-by-step explanation:

It's hard to explain how to do it, I'm sorry, but I hope this helped!

7 0
3 years ago
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How can I solve for the weight for okapi and llamas
Gre4nikov [31]
U can't lol I'm sorry
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3 years ago
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