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3 years ago

Susan runs 22 km in 2 hours and 45 minutes. What is her average speed in km an hour? Explain your answer please!

Mathematics

1 answer:

Tpy6a [65]3 years ago

4 0

Answer:

22km= 2 hours and 45 mins

To find speed: Distance/Time

22/2.75 = 8

Your answer 8km/h

Step-by-step explanation: When finding speed, the formula is always distance divided by time. 45 minutes of 60 minutes is 3/4 of an hour, and 3/4 is 0.75 is decimal. So you add the 2 + .75, and you'll get 2.75. After you convert the time, you begin dividing and you'll get your answer!

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After doing some work in the house, Bob and Carol want to put a concrete patio on the side of the house to keep people from trac

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Answer:

V=3.098 yd³

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To answer this question we need to work with formula of the Volume of rectangular prism, the patio. Once it is required 1 inch deep. Some relations will be useful.

As 1 yard = 1 feet/3

1 yard = 1 inch/36

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a) 23 feet 9 inches

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3 years ago

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9) 5.6 yd 5 yd 12 yd Find the area. (A = 1/2 ( 61 + b2) h)

krek1111 [17]

Answer:

Area, A = 63.6 square yards

Step-by-step explanation:

A trapezoid refers to a quadrilateral that is convex in shape; as such it has no equal sides and no parallel sides.

Let the height of a trapezoid be h.

Let the top base of a trapezoid be b1.

Let the bottom base of a trapezoid be b2.

$Area \; of \; trapezoid = \frac {1}{2} * (Sum \; of \; nonparallel \; sides) * height$

Therefore, $Area \; of \; trapezoid = \frac {1}{2} * (b_{1} + b_{2}) * h$

Given the following data;

Length, b1 = 5 yards

Width, b2 = 5.6 yards

Height, h = 12 yard

To find the area of geometrical shape (trapezoid), we would use the above formula;

A = 1/2 (b1 + b2) * h

Substituting into the formula, we have;

A = ½ * (5 + 5.6) * 12

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A = 5.3 * 12

Area, A = 63.6 square yards

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3 years ago