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Rudik [331]
2 years ago
15

Factor this polynomial completely. x2 - 81

Mathematics
1 answer:
Naddik [55]2 years ago
6 0
The first answer is right
(x - 9) (x + 9)
It’s me again lol
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Each side of the smaller square in the figure below is n inches long, and each side of the larger square is p inches longer than
lana66690 [7]

Answer:

2np + p²

Step-by-step explanation:

The general formula for the area of a square is A = s², where s = the length of one side of the square.  In the case of the smaller square the area would be: n x n = n².  Since the side of the larger square is 'p' inches longer, the length of one side is 'n + p'.  To find the area of the larger square, we have to take the length x length or (n +p)².

Using FOIL (forward, outside, inside, last):

(n + p)(n+p) = n² + 2np + p²

Since the area of the first triangle is n², we can subtract this amount from the area of the larger square to find out how many square inches greater the larger square area is.

n² + 2np + p² - n² = 2np + p²


8 0
3 years ago
Plwees help:)
Klio2033 [76]
Answer #1- 8 mins
Answer #2-$0.571

Explanation for #1:

For this first equation you need to find 1 mike per ___ minutes. To get from 10 to 1, you need to divide by 10. This can also be put into this equation—

10x=80

So, to find how many minutes for each mile, divide 80 by 10. This will result in 8. This means that Dan ran 1 mile in 8 minutes.


Explanation for #2:

For this next one we see that we need to find how much Yoko spent on each pound of rice.

Since we are trying to find 1 pound of rice per ___ dollars, we need to divide both 14 and 8 by 14. This can also be put into this equation—

14x=8

Once this is done we know that 1 pound of rice is equal to 0.571428571428571 cents. But, since you are required to round to the nearest hundredth, the answer will only be $0.571.

Hope this helps comment below for more questions :)
7 0
3 years ago
Help me
Mandarinka [93]

Answer:

$3!! hope this helps!!!

3 0
2 years ago
What are the two main purposes of all business
Anastaziya [24]

Answer:

Because the purpose of business is to create a customer, the business enterprise has two--and only two--basic functions: marketing and innovation.

3 0
2 years ago
Read 2 more answers
Solve the linear system using substitution <br><br> y - 5 = x<br> 4x - y = 4
Agata [3.3K]

Step-by-step explanation:

X=y-5

Now,

4x-y=4

4(y-5)-y=4

4y-20-y=4

3y=24

Y=8

Substituting the value of y

8-5=x

X=3

3 0
2 years ago
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