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11Alexandr11 [23.1K]
3 years ago
10

Pls help with equations

Mathematics
1 answer:
qaws [65]3 years ago
7 0

24.  (2x+2)+(2x+2)+(2x+2)=(x+8)+(x+8)+(x+8)+(x+8)

      6x+6=4x+32

          -6        -6

     6x=4x+26

    -4x   -4x

    2x/2=26/2

    x=13  

     

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Answer:

5 hours

Step-by-step explanation:

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2 years ago
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Let f(x)=x2−2x−4 . What is the average rate of change for the quadratic function from x=−1 to x = 4?
goblinko [34]

Answer:

The average rate of change for f(x) from x=−1 to x = 4 is, 1

Step-by-step explanation:

Average rate A(x) of change for a function f(x) over [a, b] is given by:

A(x) = \frac{f(b)-f(a)}{b-a}

As per the statement:

f(x) = x^2-2x-4

we have to find the average rate of change from x = -1 to x = 4

At x = -1

f(-1) = (-1)^2-2(-1)-4 = 1+2-4 = -1

and

at x = 4

f(4) = (4)^2-2(4)-4 = 16-8-4 = 4

Substitute these in [1] we have;

A(x) = \frac{f(4)-f(-1)}{4-(-1)}

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⇒A(x) = \frac{5}{5}

Simplify:

A(x) = 1

Therefore, the average rate of change for f(x) from x=−1 to x = 4 is, 1

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3 years ago
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AysviL [449]
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8 0
3 years ago
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X and Y are independent random variables. X is normally distributed with mean 1 and variance 1. Y is normally distributed with m
g100num [7]

Answer:

1

Step-by-step explanation:

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Total Variance = sum (i=1, N) {c^2,variance^2}

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3 years ago
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