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expeople1 [14]
4 years ago
5

A train travels at an average speed of 18 m/s.

Mathematics
1 answer:
GrogVix [38]4 years ago
8 0

Answer:

28 seconds

Step-by-step explanation:

speed = distance/time

speed * time = distance

time = distance/speed

time = (500 m)/(18 m/s)

time = 27.777... seconds

Answer: 28 seconds

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A lawn care company sells grass seed by the pound. There is one price per pound up to 5 pounds and a lower price per pound for e
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3 years ago
What is solution of 5+3(y-4)=5(y+2)-y
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Answer:

y = -17

Step-by-step explanation:

5 + 3(y - 4) = 5(y + 2) - y        Distribute

5 + 3y -12 = 5y + 10 - y          Combine like terms

-7 + 3y = 4y + 10

+7                 +17                    Add 17 to both sides

3y = 4y + 17

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y = -17

If this answer is correct, please make me Brainliest!

8 0
3 years ago
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vivi is a drummer for a band. she burns 756 calories while drumming for 3 hours. she burns the same number of calories each hour
Airida [17]

Answer:

252 cph

Step-by-step explanation:

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6 0
3 years ago
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3 years ago
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How can complex fractions be used to solve problems involving ratios
strojnjashka [21]
When you have ratios, and some unknowns, you can create complex fractions from them. Bring them to the same denominator, and solve for x.

Example - we have this proportion:
2-x
5-45
And we can change it into fraction:
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\frac{2*9}{5*9}=\frac{x}{45}

\frac{18}{45}=\frac{x}{45}
18=x

In case of more complex fractions it may come in handy.
5 0
4 years ago
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