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hodyreva [135]
2 years ago
10

The diagram shows a track composed of a rectangle with a semicircle on each end. The area of the rectangle is 12,800 square mete

rs. What is the perimeter of the track? Use 3.14 for (pie symbol)

Mathematics
1 answer:
Lelu [443]2 years ago
7 0

Answer:

271.2 meters

Step-by-step explanation:

See attached image.

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elliot rides his bike at an average speed of 14 miles per hours. how many miles will he ride in 2 1/2 hours
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14:1
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Which of the following is a rational number?<br> 8<br> 15<br> 44<br> 45<br> π
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All of them are, except ' π ' (pi) ... which gives you an idea of why
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3 years ago
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The distance between planets in two stellar systems is 1.6x10^6 miles. If a spaceship is able to travel at 8,400 miles per hour,
emmainna [20.7K]

Answer:

Yes it will be able to make the journey in under a year.

Step-by-step explanation:

To find out how many hours it will take 1.6*10^2 and divide by 8400

\frac{1.6*10^2}{8400} = 190.476 hr

So it will take the space ship 190.476 hours to make the trip.

Next, ask our self, how many hours are in a year?

To find out multiply 365 * 24 = 8760 hr

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Knowing how many hours there are in a year and how long the trip will take tells us that the journey can be made under a year since there are 8760 hours in a year and we know we can make it there in 190.476 hr traveling at 8400 mph

7 0
3 years ago
Given f(x)=3x^3+2x+k and x+1 is a factor of f(x) then what is the value of k
yaroslaw [1]

Answer:

k = 5

Step-by-step explanation:

Given that (x + 1) is a factor of f(x) then f(- 1) = 0

f(- 1) = 3(- 1)³ + 2(- 1) + k

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     = - 3 - 2 + k

    = - 5 + k

Then - 5 + k = 0 ( add 5 to both sides )

k = 5

3 0
3 years ago
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