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Harman [31]
3 years ago
7

Solve 20/15 = n/18 for the unknown quantity n

Mathematics
1 answer:
Nataliya [291]3 years ago
5 0

Answer:

<h2>n = 24</h2>

Step-by-step explanation:

\dfrac{20}{15}=\dfrac{n}{18}\qquad\text{cross multiply}\\\\15n=(20)(18)\\\\15n=360\qquad\text{divide both sides by 15}\\\\n=24

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F(x)=x^+4x+2 what is the average rate of change from x=3 to x=5
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Answer:

12

Step-by-step explanation:

f(x)=x^+4x+2 First, let's evaluate when x=3, x=4 and x=5.

f(3) = 3²+4(3)+2 = 9 + 12 + 2 = 23

f(4) = 4²+4(4)+2 = 16 + 16 + 2 = 34

f(5) = 5²+4(5)+2 = 25 + 20 + 2 = 47

Now, let's find the rate of change.

34 - 23 = 11

47 - 34 = 13

Finally, the average rate of change.

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