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exis [7]
3 years ago
14

Who runs the fastest ? (ONLY ANSWER IF YOU KNOW IT BECAUSE CORRECT ONE GETS BRAINLIEST)

Mathematics
1 answer:
Genrish500 [490]3 years ago
4 0

Answer:

<u><em>Stephanie runs the fastest per second: 14 feet per second</em></u>

Step-by-step explanation:

To find the fastest speed, you need to see which person runs the most per second:

Stephanie runs <em>14 feet per second</em>

<em />

Brooke runs 589 feet in 44 seconds.

Find the amount of feet per second by dividing:

\frac{589}{44} =13.4

Brooke runs about <em>13.4 feet per second</em>

<em />

Will runs 1 mile in 454 seconds.

Convert the miles to feet:

There are 5,280 feet in a mile. If Will runs 5,280 feet in 454 seconds, divide to find how much he runs per second:

\frac{5280}{454}= 11.6

Will runs about <em>11.6 feet per second.</em>

<em />

Rob runs 548 feet in a minute.

Convert the minute into seconds. There are 60 seconds in a minute. Divide the feet by the seconds to find how fast he runs per second:

\frac{548}{60}= 9.1

Rob runs about <em>9.1 feet per second.</em>

Stephanie runs 14 feet per second, the fastest time:

| 14 |, 13.4, 11.6, 9.1

<em>Finito.</em>

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Vlad1618 [11]
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First, simplify brackets. / Your problem should look like: 3 = y - 6
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Write the equation of the ellipse with foci at (-2,2) and (4,2) and major axis of length 10 *
Luda [366]

Answer:

The answer to your question is   \frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1          

Step-by-step explanation:

Data

Foci  (-2, 2)  (4, 2)

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Process

1.- Plot the foci to determine if the ellipse is vertical or horizontal. See the picture below.

From the graph we conclude that it is a horizontal ellipse.

2.- Determine the foci axis (distance between the foci)

                  2c = 6

                    c = 6/2

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3.- Determine a

                  2a = 10

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4.- Determine b using the Pythagorean theorem

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                   b² = 5² - 3²

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                   b = 4

5.- Find the center (1, 2)  From the graph, it is in the middle of the foci

6.- Find the equation of the ellipse

                      \frac{(x - 1)^{2}}{5^{2}} + \frac{(y - 2)^{2}}{4^{2}} = 1

                       \frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1                

3 0
2 years ago
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