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Lorico [155]
2 years ago
15

Multiply the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending pow

ers of x. (5x2 - 7)(5x2 + 7)
Mathematics
2 answers:
GuDViN [60]2 years ago
5 0

Answer:25x^4 - 49

Step-by-step explanation:

5x^2 - 7)(5x^2 + 7)

(5x^2)^2 - 7^2

25x^4 - 49

Fynjy0 [20]2 years ago
3 0
(5x^2 - 7)(5x^2 + 7)
(5x^2)^2 - 7^2
25x^4 - 49

Answer:
25x^4 - 49

Hope this helps.
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Y = (2/3)x - 1<br> y = -x + 4
Vinil7 [7]
Are these two separate questions?
7 0
2 years ago
How is 3 divided by 1.4 ...2.14? Working please!
musickatia [10]
Turn 1.4 into a whole number. Which makes 1.4 to 14. We know that 3 has a decimal point at the end. So move the decimal point of 3 to the right, making it 30. Now do 30/14. You will get...

30/14 = 2.14

GG ;)
5 0
3 years ago
What is 5 2/5 subtract 2 1/15?
STatiana [176]
5 2/5 would be converted to 5 6/15. you would then subtract the numerators and the whole numbers, giving you 3 5/15, which simplifies to 3 1/5
7 0
2 years ago
Read 2 more answers
According to the U.S. Department of Education. Institute of Education Sciences, National Center for Education Statistics 1,026,0
Andreyy89

Answer:

The correct option is C) 21.1 and 0.68  

Step-by-step explanation:

Consider the provided information.

The mean composite score was 21.1 with a standard deviation of 4.8. The ACT composite score ranges from 1 to 36, with higher scores indicating greater achievement in high school.

Therefore μ = 21.1 and σ = 4.8

It is given that the sample of 50 students;

Thus, sample size ( n ) = 50

According to the central limit theorem,

\mu_{\bar x}=\mu\ and \ \sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}

Therefore

\mu_{\bar x}=21.1

\sigma_{\bar x}=\frac{4.8}{\sqrt{50}}

\sigma_{\bar x}=0.68

Hence, the correct option is C) 21.1 and 0.68

7 0
3 years ago
If the value of b is 7 , then what is the value of the expression -3b2 + 25 = ?
Katarina [22]
Hello there!

Evaluate
-3b² + 25
For b = 7
-3(7)² + 25
-3(49) + 25
-147 + 25
= -122

I hope that helps!
6 0
3 years ago
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