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Karolina [17]
3 years ago
14

Evaluate the value of a÷ ( b+c) when a= 51 , b= 15 & c= 2 .

Mathematics
1 answer:
mel-nik [20]3 years ago
4 0

Answer:

by substituting the values we get

51÷(15+2)

51÷17=3

hope it helps you mate

please mark me as brainliast

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x MPH means every hour the freight train covers x miles., which means in 3h it will have covered 3 times as much: 3x mi.

Following the same logic, 3x MPH means every hour the passenger train covers 3x miles, meaning after 3h it will have covered 3 times as much as well: 9x mi.

Now, having expressed those distances and speeds algebraically, we find the difference between the two distances covered after 3h, knowing it will be equal to 240:

9x-3x=6x\\6x=240\\x=240/6\\x=40

Knowing this, we can surely affirm that the freight train is travelling at 40MPH and the passenger train is travelling three times as fast, 120MPH.

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3 years ago
What is the answer decimal division
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Step-by-Step Explanation:
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3 years ago
Which of the following gives all of the coefficients of the algebraic expression -2x2 + 17 -15x + 7xy?
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3 0
3 years ago
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Heights of 10 year olds, regardless of gender, closely follow a normal distribution with mean 55 inches and standard deviation 6
Firlakuza [10]
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4 0
3 years ago
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Putting the values given to find the 'Cost per pound':

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The correct answer is:

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