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Alekssandra [29.7K]
3 years ago
15

A cross country skier reaches the 3km mark of a race in 15 min and 12 km mark 45 min later. Assuming a contrast rate find the sp

eed of the skier
Mathematics
1 answer:
melomori [17]3 years ago
4 0
To find the speed you must write S= d/t so for the first one we will chang 15 m to b so it is = 0.25h so s=3/0.25h = 12km/h an why secand is 45 m to h = 0.75h so S=d/t S =12/0.75 =16 km/h the to find the totel speed we should + the speed together so 12 + 16 = 28 km/h
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Step-by-step explanation:

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lilavasa [31]

Answer:

The y-intercept of points A and B is -2.

Step-by-step explanation:

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John is 3 years older than Susan and khalid is 5 years younger than her . The sum of their ages is 40 .
lapo4ka [179]

Answer:

John is 17,

Susan is 14,

and Khalid is 9.

Step-by-step explanation:

a = John's age

b = Susan's age

c = Khalid's age

Let's set our rules from the given information.

a = b + 3

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Now, we can solve for b through substitution.

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b = 14

So, now that we have Susan's age, we can follow the rules and see if it holds.

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8 0
3 years ago
Answers choices<br> &lt;1<br> &lt;4<br> &lt;2<br> &lt;3
Maslowich

Answer:

B) 4

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So, the angle of depression from the lighthouse to the boat is 4.

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