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Vlad1618 [11]
3 years ago
5

H(x)=2x3 – 3 Find h(2)

Mathematics
1 answer:
djverab [1.8K]3 years ago
8 0
When it tells you to find h(2), that means you plug in 2 for x.
If 2x^3 (to the third power)
2(2)^3-3

1. PEMDAS, exponents first
2^3=8

2. multiply
8x2=16

3. subtract
16-3=13

Hope this helps!
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Selena was comparing the flying speeds of different birds in science class. Which of the three birds flies fastest? Why?
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Answer:

Option C. The robin flies fastest because its rate is 15 m/s

Step-by-step explanation:

Let

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y ----> the distance in meters

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In this problem, the slope or unit rate of the linear equation is the same that the speed

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<em>Find the slope</em>

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

take two points from the table

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substitute in the formula

m=\frac{45-30}{3-2}

m=\frac{15}{1}

m=15\frac{m}{sec}

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y=10x

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take two points from the graph

(0,0) and (2,20)

substitute in the formula

m=\frac{20-0}{2-0}

m=\frac{20}{2}

m=10\frac{m}{sec}

Compare

The robin flies fastest because its rate is 15 m/s

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