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3 years ago

How long dose it take to travel 5km at an average speed of 8 m/s? Give your answers in minutes and seconds

Mathematics

1 answer:

eduard3 years ago

4 0

Answer:

625 seconds and 10 minutes

Step-by-step explanation:

distancs=S=5km=5000m

average speed=v=8m/s

time taken=t=?

as we know that

average speed= $\frac{distance covered}{time taken}$

average speed×time taken=distance covered

here we have to find the time taken

time taken= $\frac{distance covered}{average speed}$

time taken= $\frac{5000m}{8m/s}$

time taken=625seconds

now we convert seconds into minutes

$\frac{625}{60}$

10 minutes

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If you add 3 groups of 10 to 100, what is the total? How do you know?

Mazyrski [523]

Answer:

130

Step-by-step explanation:

3*10 =30+100=130

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3 years ago

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A rectangular painting is 24 inches wide and 20 inches tall without the frame. With the frame, it is 28 inches wide and 24 inche

evablogger [386]

The area of the frame not covered by the painting is 192 square inches

Solution:

Given that, A rectangular painting is 24 inches wide and 20 inches tall without the frame

The area of rectangle is given as:

$Area = length \times width$

Find the area of painting without frame:

Length = 20 inches

Width = 24 inches

$Area\ Without\ Frame = 20 \times 24 = 480$

Thus area of painting without frame is 480 square inches

With the frame, it is 28 inches wide and 24 inches tall

Find the area of painting with frame:

Length = 24 inches

Width = 28 inches

$Area\ with\ frame = 24 \times 28 = 672$

Thus area of painting with frame is 672 square inches

What is the area of the frame not covered by the painting

Area of the frame not covered by the painting = Area with farme - Area without frame

Area of the frame not covered by the painting = 672 - 480 = 192

Thus the area of the frame not covered by the painting is 192 square inches

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3 years ago

If m∠AEB = 88°, find m∠AED

Marianna [84]

Answer:

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Step-by-step explanation:

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3 years ago

What is 120 over 540

Zielflug [23.3K]

Answer:

0.2

Step-by-step explanation:

Basically, all you would do is 120/540. Which is the same thing as division. So: 120 / 540 = 0.2

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3 years ago

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A 24-foot ladder rests against a house near a second story window 20 feet from the ground. Assume that the ladder and the house

Sauron [17]

The ladder, leaning against the building, forms a right triangle with height "a" being the distance from the ground to the window, and hypotenuse "c" being the length of the ladder.

Because it's a right triangle, we can use trigonometric ratios to find the angles we're missing.

For part A), to solve for the angle between the base of the ladder and the ground, you'll want to use sine, because we know the lengths of the opposite side and the hypotenuse.

Sin(x) = a/c , solve for angle x in degrees or radians.

For part B), finding the angle between the top of the ladder and the building, remember that the sum of the angles in a triangle is 180 degrees, or pi radians, depending on which unit your teacher prefers.

Assuming degrees, we can say that angle y = 180-90-x. You are simply subtracting the two known angles to find the third.

For part C) use the Pythagorean theorem. You're looking for the length of the base, "b". Recall:

a^2 + b^2 = c^2

Plug in the known values, and solve for b.

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3 years ago