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Shkiper50 [21]
3 years ago
9

Which polynomial is a difference of two squares? x2 − 16 x2 + 16 x2 − 8 x2 + 8

Mathematics
2 answers:
AnnZ [28]3 years ago
8 0
X2 - 16, is the answer. The first one.

x^2 - 16 = (x)^2 - 4^2, difference of two squares :)
Effectus [21]3 years ago
6 0
The difference of two squares is of the form:

(a^2-b^2)

I believe that they might just want you to select

(x^2-16) which factors to (x-4)(x+4)

But there is nothing mathematically incorrect in doing the same for:

(x^2-8) which factors to (x-√8)(x+√8)
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Yea its correct! good job yea there are not any mistakes

Step-by-step explanation:

8 0
3 years ago
A 15 ft. Ladder is placed against a building so that the distance from the top of the ladder to the ground is 10 ft. Find the di
kipiarov [429]

Answer:

  11.2 ft

Step-by-step explanation:

Assuming the building meets the ground at right angles, the right triangle formed has side length 10 ft and hypotenuse 15 ft. Then the other side length (d) is given by the Pythagorean theorem as ...

  d² + 10² = 15²

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The bottom of the ladder is about 11.2 feet from the building

3 0
3 years ago
Hellen is using 3.508 grams of copper for her science experiment. How many kilograms of copper did Hellen use for her science ex
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Answer:

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Step-by-step explanation:

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7 0
2 years ago
Chelsea bought a computer on Monday for $1,300. Its value is predicted to decrease by $250 per year. Her brother George also bou
Elenna [48]

Answer:

The correct answer is B. George’s computer is expected to have a value of $25 greater.

Step-by-step explanation:

Since Chelsea bought a computer on Monday for $ 1,300, and its value is predicted to decrease by $ 250 per year, while her brother George also bought a computer on Monday, and the function g (x) = 1,100 - 175x predicts how the value of his computer is expected to change after x years, to determine whose computer is expected to have a greater value when it is 3 years old, and how much greater will it be, the following calculation must be performed:

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1,300 - (250 x 3) = X

1,300 - 750 = X

550 = X

George:

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Therefore, George’s computer is expected to have a value of $ 25 greater.

7 0
3 years ago
Grace and Jamal each bought notebooks for school. Grace bought 3 notebooks for $3.90 while Jamal bought 2 notebooks for $2.20. W
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2.2/2=$1.10

The unit prices are $1.30 and $1.10.
Hope this help!
7 0
3 years ago
Read 2 more answers
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