3 years ago

Math help!?!?!?!?!?!?!?!?!

1 answer:

5 0

The answer is B. Multiply both sides of the top equation by 2.
This is because if you multiply 3x by 2, you get 6x, and 6x is in the other equation, which makes the x-values equal

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Help! What is the average rate of change of f(x)=x^2+3x+6 over the interval -3 less-than-or-equal-to x less-than-or-equal-to 3?

Makovka662 [10]

Answer:

The average rate of change of the function over the interval is 5.

Step-by-step explanation:

Average rate of change of a function:

The average rate of change of a function f(x) over an interval [a,b] is given by:

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

Interval -3 less-than-or-equal-to x less-than-or-equal-to 3

This means that $a = -3, b = 3$

$f(x) = x^2 + 3x + 6$

$f(b) = f(3) = (3)^2 + 3(3) + 6 = 9 + 9 + 6 = 24$

$f(a) = f(-3) = (-3)^2 + 3(-3) + 6 = 9 - 9 + 6 = 6$

Average rate of change

$A = \frac{f(b)-f(a)}{b-a} = \frac{24+6}{3-(-3)} = \frac{30}{6} = 5$

The average rate of change of the function over the interval is 5.

8 0

2 years ago

The measures in degrees of the three angles of a triangle are given by 2x+1, 3x - 3 , and 9x. what is the measure of the smalles

olganol [36]

The answer would be b. 27

5 0

3 years ago

Help!! I need an answer asap!! Given a∥b, find m∠1 = 71º. Find: m∠5, m∠8

Sindrei [870]

Answer:

m<5 = 71 and m<8 = 109

Step-by-step explanation:

m<1 is equivalent to m<5 and m<2 is equivalent to m<8.

5 0

2 years ago

Read 2 more answers

Solve for a .5(a+b)h

Alla [95]

Answer: 5ah+5bh

Step-by-step explanation:

all i did was foil! hope that helps!

4 0

3 years ago

120 books increased by 55%

Novay_Z [31]

To find 55% of 120 books, multiply 120 x .55
Then add that answer to the original 120.

120 + 55% = 186

6 0

3 years ago