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nexus9112 [7]
3 years ago
7

What is the square root of X of the power of 2 -1 =80?

Mathematics
1 answer:
zepelin [54]3 years ago
5 0

Answer:

x=6561

Step-by-step explanation:

We can solve this equation for x to get

\sqrt{x} -1=80\\\\\sqrt{x} =81\\x=(81)^2\\\\x=6561

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Let f(x)=x^2+2x+3 . What is the average rate of change for the quadratic function from x=−2 to x = 5?
miskamm [114]
To find the average rate of change of  given function f(x) on a given interval (a,b):

Find f(b)-f(a), b-a, and then divide your result for f(b)-f(a) by your result for b-a:


f(b) - f(a)
------------
    b-a

Here your function is f(x) = x^2 - 2x + 3.  Substituting b=5 and a=-2,
f(5) = 5^2 -2(5)+3 =?                          and f(-2) = (-2)^2 - 2(-2) + 3 = ?


Calculate           f(5) - [ f(-2) ]
                         ------------------ using your results, above.
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Your answer to this, if done correctly, is the "average rate of change of the function f(x) = x^2+2x+3 on the interval [-2,5]."
5 0
3 years ago
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Hoochie [10]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Given
kondaur [170]

Answer:

+ 10 and + 7

Step-by-step explanation:

Given

2x² + 7x + 5

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 2 × 5 = + 10 and sum = + 7

4 0
3 years ago
What is 1/2 of 7/10​
Vsevolod [243]

Answer:

7/20

Step-by-step explanation:

of = multiply

1/2 x 7/10

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2x 10 =  20

7/20 can not be reduced.

so, the answer will be 7/20

<h2><u><em>hope it helps </em></u></h2>

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3 years ago
Each group of three digits separated by commas in a multi digit number
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You didn't ask a question but its called a period
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3 years ago
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