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Kamila [148]
4 years ago
8

Determine whether the polynomial is a difference of squares and if it is, factor it.

Mathematics
1 answer:
Alexandra [31]4 years ago
4 0
Just by the language difference means subtract, 

Y^2-25 is the difference of squares
factored it's the sum and difference of their square roots

(x+5) (x-5)
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Can someone help me?
r-ruslan [8.4K]
4x +31 = 35
6x +39 = 45
35 + 45 = 80 
I believe it would be 80
4 0
4 years ago
The length of a rectangle is the sum of the width and 4. The area of the rectangle is 32 units. What is the width, in units, of
tigry1 [53]

Answer:

b=4

Step-by-step explanation:

Lets a be lenght and b width. From text we have:

a=b+4

a*b=32

Put the first equation in the 2n, we get:

(b+4)b=32

b^2+4b-32=0

b^2+8b-4b-32=0

b(b+8)-4(b+8)=0

(b+8)(b-4)=0

So it must be b=-8 or b=4. We know that width cannot be negative, so it is 4.

5 0
4 years ago
Which of the following sets of numbers could be the lengths of the sides of a triangle? A. 1 mi, 9 mi, 10 mi B. 8 mi, 9 mi, 2 mi
Svetach [21]

Answer:

Option B. 8 mi, 9 mi, 2 mi

Step-by-step explanation:

The option A doesn't have a set of numbers which could be the lengths of the sides of a triangle. The numbers 1,9,10 mean that the longest side is exactly the sum of the others. The only possible way is they lie in the same line, no triangle is formed

Option C gives the numbers 1,9,11. It's impossible to have a side of 11 when you have the sum of the others less than 11. The maximum extension of the other sides (forming a line) won't be enough to reach the length of 11

Option D is also infeasible for the same reason as the option A. The three lines must be aligned to be connected in its extremes

Option B is the only one who can provide a set of possible lengths of a triangle since the sum of the shortest sides is greater than the third. If we open wide enough the angle between the 2 mi side and the 8 mi side, we would eventually connect the 9 mi side and form a triangle

7 0
3 years ago
Determine the domain of the following graph please
Doss [256]

Answer:

download in the link

yousbfe.15537.com

4 0
3 years ago
On Saturday, a souvenir shop had 125 customers. Sixty-four percent of the customers paid with a credit card. The other customers
wel

Answer:

45 customers

Step-by-step explanation:

Given

Total number of customers = 125

percent that paid with credit card = 64%

Customers that paid with credit card = 64% * 125

Customers that paid with credit card = 0.64 * 125 = 80

Number of customers that paid with cash  = 125 - 80

Number of customers that paid with cash = 45 customers

7 0
3 years ago
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