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zubka84 [21]
2 years ago
8

At 9.00 AM, two trains are 715 miles apart traveling toward each other on parallel tracks. If one train is traveling at a rate t

hat is 10 miles per hour faster than the other train and they meet after 5.5 hours, how fast is each train traveling?
Mathematics
1 answer:
prisoha [69]2 years ago
3 0
One train will be travelling at 60 mph, and the other train will be travelling at 70 mph. 70 * 5.5 = 385, 60 * 5.5 = 330. 330 + 385 = 715
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The volume of a cylinder is 4x3 cubic units and its height is x units.
Anastasy [175]

Answer:

The answer to your question is r = 2x

Step-by-step explanation:

Volume of a cylinder = V = π r² h

r = radius

h = height = x

Volume = 4x³

Then

                  r² = \frac{volume}{\pi h}

                  r² = \frac{4x^{3} }{\pi x}

                  r² = 4x²

                  r = 2x

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Prove that ax+by+c=0 represent the eqn of straight line
ivann1987 [24]
If we rewrite it as y=mx+d (which can be taken from here from subtracting ax and c from both sides, then dividing b, resulting in y=(-a/b)(x)-c/b. We can then substitute -a/b for m and -c/b for d), if d=0, then we have m as a constant and as we add a specific number to y (that number being m) every time the x value increases by 1, it therefore forms a straight line. If d is not 0, then we simply add d to every single number - this is still a straight line due to that we still add a specific number to y every time x increases by 1 every single time
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3 years ago
Find a area of a circumference that is 13 ft for 3.14 π
Elena-2011 [213]

Answer:

4.14x3.14=12.9996

Step-by-step explanation:

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Here is a few equations a dn formulas to remind you.

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This is Pi times the radius times the radius.

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8 0
2 years ago
Follow the steps to solve this equation. 3(2x + 6) – 4x = 2(5x – 2) + 6 1. Use the distributive property: 6x + 18 – 4x = 10x – 4
Yuliya22 [10]

Answer:

x=2.

Step-by-step explanation:

We have been given an equation 3(2x+6)-4x=2(5x-2)+6. We are supposed to solve our given equation step by step.

Step 1: Use the distributive property.

3\cdot 2x+3\cdot 6-4x=2\cdot 5x-2\cdot 2+6

6x+18-4x=10x-4+6

Step 2: Combine like terms.

6x-4x+18=10x-4+6

2x+18=10x+2

Step 3: Use subtraction property of equality:

2x-2x+18-2=10x-2x+2-2

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Step 4: Use the division property of equality:

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2=x

Therefore, the solution of our given equation is x=2.

8 0
3 years ago
Read 2 more answers
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