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maw [93]
3 years ago
8

Each day a runner trains for a 10km race. On the fisrt day she runs 1000m, and then increases the distance by 250m on each subse

quent day.
a) On which day does she run a distance of 10km in training?

b) What is the total distance she will have run in training by the end of that day?
Mathematics
1 answer:
anyanavicka [17]3 years ago
7 0
I think the answer is b
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Find the length of XY
Pachacha [2.7K]

Since this is a right triangle, you can use the pythagorean theorem, leg^2+leg^2=hypotenuse^2, to find XY. Since we know that 15 and 17 are our legs and that XY is the hypotenuse, we can solve it as such:

15^2+17^2=XY^2\\ 225+289=XY^2\\ 514=XY^2\\ \sqrt{514}=XY

In short, XY is √514, or 22.67 rounded to the hundreths, units long.

7 0
2 years ago
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If rolando earned $28.50 in 2 hours, how much would he earn in 8 hours?
cricket20 [7]

First, we need to find his unit rate, the amount he earns in 1 hour.

So, we have to divide 28.50 by 2.

That is:

28.50 / 2 = $14.25 per hour

To find the amount he earns in 8 hours, we will need to multiply hourly rate found by "8". So,

14.25 * 8 = $114

<h2>Rolando earns $114 in 8 hours</h2>

5 0
1 year ago
If a bloodstain has a length of 3.0cm and a width of 1.5cm what is the angle of impact?
zalisa [80]

The angle of impact is 30°

<h3>What is the angle of impact?</h3>

In a bloodstain, the angle of impact can be used to determine the appearance of the resulting bloodstain if the bloodstain has a tail or pattern.

  • Bloodstain pattern analysis is the study of bloodstains at a scene of the crime in an attempt to reconstruct the events that resulted in the bloodshed.

Mathematically;

\mathbf{Angle  \ of \  impact = sin^{-1} (\dfrac{width \ stain}{length \ stain} )}

\mathbf{Angle  \ of \  impact = sin^{-1} (\dfrac{1.5}{3.0} )}

\mathbf{Angle  \ of \  impact = 30 ^0}

Learn more about the angle of impact here:
brainly.com/question/19423063

6 0
2 years ago
Please help me, I don't understand this XD
labwork [276]
The correct sentence is letter "B"

6 0
2 years ago
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brigid ran a 26.2 mile race last sunday. her average speed during the race was 11.7 miles per hour. how long did it take brigid
Helen [10]

Answer:

2.24 hours

Step-by-step explanation:

time = distance/rate

t = 26.2/11.7

t = 2.24 hours

4 0
2 years ago
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