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ololo11 [35]
3 years ago
9

The graph below shows the relationship between time and distance traveled by a race car moving at a

Mathematics
1 answer:
wel3 years ago
4 0

Answer:

It takes 2.4 hours to travel 480 miles.

Step-by-step explanation:

From the graph race car is moving at 100 miles in 0.5 hours. So, in 1 hour, car could travel 2*100 =200 miles per hour.

So, we can set up equation as

y= 200x.

Plug in y as 480 then solve for x.

480 =200x

Divide both sides by 200

2.4=x

So, it would take 2.4 hours.

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Answer:

Step-by-step explanation:

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3 years ago
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28.5 united squared

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Suppose your boss wants you to obtain a sample to estimate a population mean. Based on previous analyses, you estimate that 49 i
VashaNatasha [74]

Answer:

the minimum sample size n = 11.03

Step-by-step explanation:

Given that:

approximate value of the population standard deviation \sigma = 49

level of significance ∝ = 0.01

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The minimum sample size required can be determined by calculating the margin of error which can be re[resented by the equation ;

Margin of error = Z_{ \alpha /2}} \times \dfrac{\sigma}{\sqrt{n}}

38 = \dfrac{2.576 \times 49}{\sqrt{n}}

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5 0
3 years ago
Max has 5 red model cars. One third of his model cars are red. How many model cars does Max have?
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15 total
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Answer:

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1. Start with 40 animals

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