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antiseptic1488 [7]
3 years ago
13

A runner runs at an average speed of 6 m/s for 15 seconds.

Mathematics
2 answers:
podryga [215]3 years ago
8 0

Answer:

5400 meters

Step-by-step explanation:

In order to find the answer to this question you need to multiply the amount traveled per second by the amount of seconds he ran, then just convert that answer into meters.

1 second = 6 m/s

15 seconds = 90 m/s

15 × 6 = 90

1 meter per second = 60 meters per minute

90 × 60 = 5400

= 5400 meters

Hope this helps.

jenyasd209 [6]3 years ago
6 0

Answer:

Step-by-step explanation:

In kinematic motion

x= xo + vt

xo= 0 because they didn't give it so we suppose it as 0

x= vt

x= 6m/s * 15s

x= 90m

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3 years ago
a regular polygon has a perimeter of 36 inches. each side is exactly 6 inches long. which figure does this discribe?
fgiga [73]
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3 years ago
Please help me I don’t know this
inessss [21]

Answer:

28 degrees

Step-by-step explanation:

68 = 2m + 12

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6 0
3 years ago
The area of the shaded sector is shown. Find the radius of circle M. Round your answer to the nearest hundredth.
Vaselesa [24]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the sector, its area and the angle at the center are not given.

I will solve this using the following illusration

The area of a sector is:

Area= \frac{\theta}{360} * \pi r^2

Assume that:

\theta = 120

Area = 20

The equation becomes

20= \frac{120}{360} * \pi r^2

Simplify

20= \frac{1}{3} * \pi r^2

Take: \pi = 3.14

20= \frac{1}{3} *3.14* r^2

Cross Multiply

3.14 * r^2 = 20 * 3\\

Solve for r^2

r^2 = \frac{20 * 3}{3.14}

r^2 = 19.11

Take square roots

r = \sqrt{19.11

r = 4.4

3 0
3 years ago
A dinner table is a perfect circle with a diameter of 8 feet
Daniel [21]

Answer:

The area of the tablecloth showing is approximately 45.55 square feet

Step-by-step explanation:

The diameter of the dinner table, D = 8 feet

The diameter of each plate, d = 1 feet

The number of people at the dinner table = 6 people

The number of plates = 6 plates

The area of the table cloth, A₁ = π·D²/4

∴ A₁ = π × 8²/4

The area covered by the 6 plates, A₂ = 6·π·d²/4

A₂ = 6 × π × 1²/4

Let 'A' represent the area of the tablecloth showing when the table is set for six people, we have;

A = A₁ - A₂

∴ A = π × 8²/4 - 6 × π × 1²/4 ≈ 45.55 ft.²

The area of the tablecloth showing when the table is set for six people, A ≈ 45.55 ft.²

8 0
3 years ago
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