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1 year ago

Hi I need help with this homework this is not a test

Mathematics

1 answer:

Lelu [443]1 year ago

4 0

To determine the speed, we will divide the total distance covered by the total time spent traveling.

$speed=distance\div time$ $speed=412.5miles\div7.5hrs$

<em>Note that 7 1/2 is just equal to 7.5.</em>

<em />

Divide the numbers above and the answer is:

$speed=55miles\text{ }per\text{ }hour$

Answer:

Ivan was driving at a constant speed of 55 miles per hour.

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15.7/6.28 what is the answer how do you do it

Andrew [12]

Simply divide 15.7 by 6.28 to get 2.5 :) easy peasy pumpkin pie

7 0

3 years ago

Issac put $5 in a shoe box every day for the months of april, may, and june. He then spent 75% of the money on baseball cards. H

igor_vitrenko [27]

As of 2021:
April-$150
May-$155
June-$150
Total-$455
Spent 75%=455/100x75
=341.25
455-341.25=$113.75
Round off to 3sf: $114
Have a good day

3 0

3 years ago

$500 shared in ratio 2:3:9

RideAnS [48]

2:3:9......added together = 14

2/14 (500) = 1000/14 = 71.43
3/14 (500) = 1500/14 = 107.14
9/14 (500) = 4500/14 = 321.43

6 0

3 years ago

From the top of a tower, an object which is 97 m away from the base of the tower, is at a 37° angle of depression.

mario62 [17]

<h3>Answer: 73</h3>

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Work Shown:

Check out the diagram below. Note the pair of alternate interior angles that are congruent (each 37 degrees). Then focus on triangle ABC. With the reference angle being at A, this means we use the tangent function because BC = x is the opposite side and AB = 97 is the adjacent side.

tan(angle) = opposite/adjacent

tan(A) = BC/AB

tan(37) = x/97

97*tan(37) = x

x = 97*tan(37)

x = 73.094742859971

For the last step, you'll need a calculator that can handle trig functions. Make sure the calculator is in degree mode. The result here is approximate. This rounds to 73 when rounding to the nearest whole number.

7 0

3 years ago

How do I prove that a quadrilateral is a rectangle?

maw [93]

I think you want to prove that a rectangle is a quadrilateral. You can prove this with definitions. The definition of a quadrilateral is that it is a shape with four sides. Since a rectangle has four sides, that proves that a rectangle is a quadrilateral.

7 0

3 years ago

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