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Ymorist [56]
3 years ago
6

Multiply the following polynomials (5x2 - 7)(5x2 + 7)

Mathematics
1 answer:
s2008m [1.1K]3 years ago
8 0

Answer:

25x^{4} - 49

Step-by-step explanation:

Each term in the second factor is multiplied by each term in the first factor, that is

= 5x²(5x² + 7) - 7(5x² + 7) ← distribute both parenthesis

= 25x^{4} + 35x² - 35x² - 49 ← collect like terms

= 25x^{4} - 49 ← a difference of squares

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How do i simplify 2a x 3b x 4c
AlekseyPX
In the expression <span>2a x 3b x 4c,
2, 3 and 4 are the coefficients and a, b and c are the variables.
When such a multiplications is given, multiply the coefficients together and the variables together.

So the product of coefficients = 2</span>×3×4 = 24
the product of variables = a×b×c = abc

Finally multiply the  product of coefficients and  product of variables.
Final product = 24×abc = 24abc

So <u>24abc</u> is the answer.
6 0
4 years ago
Read 2 more answers
The fish population of Lake Collins is decreasing at a rate of 5% per year. In 2000 there were about
olchik [2.2K]

Answer:

Number of fish in 2006 = 845 fishes (Approx.)

Step-by-step explanation:

Given;

Number of fish in 2000 = 1,150 fishes

Decreasing rate = 5% per year

Find:

Number of fish in 2006

Computation:

Exponential decay function:

F = P[1-r]ⁿ

Number of year = 2006 - 2000

Number of year =  6 year

Number of fish in 2006 = 1,150[1-5%]⁶

Number of fish in 2006 = 1,150[1-0.05]⁶

Number of fish in 2006 = 1,150[0.95]⁶

Number of fish in 2006 = 1,150[0.735]

Number of fish in 2006 = 845.25

Number of fish in 2006 = 845 fishes (Approx.)

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Melissa wants to check the accuracy the accuracy of the finance charge on her promissory note. She has a $6000, four-year loan a
ValentinkaMS [17]

Answer:

1. Melissa wants to check the accuracy of the finance charge on her promissory note. She has a $6,000, 4-year loan at an APR of 3.11%.

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Which question(s) could be answered by collecting data that has variability? Click on each statistical question. To change an an
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Answer:

how old are the cats that live in Kyle's neighborhood?

Step-by-step explanation:

Because the question is  statistical which mean you will get more then one answers

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