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Leni [432]
3 years ago
8

The average speed of an express train is 15 mi/h faster than the average speed of a local train 2 hours longer than the express

train to cover 360 miles. what is the average speed of the express train?
PLEASE HELP!!!!
Mathematics
1 answer:
natta225 [31]3 years ago
5 0
360÷15×2=48hrs of the express train.
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In a recent semester at a local university, 490 students enrolled in both General Chemistry and Calculus I. Of these students, 6
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Answer:

Probability chosen student received A in one or both = 0.191 (Approx.)

Step-by-step explanation:

Given:

Total number of student = 490

66 = received A in general chemistry

58 = received A in calculus

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Probability chosen student received A in one or both.

Computation:

Probability chosen student received A in one or both = 66/490 + 58/490 - 30/490

Probability chosen student received A in one or both = 94/490

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Piral Review Solve for x.
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step by step explanation:

since the two angles are linear pairs that would make the sum of the two angles equal out to 180 degrees (a straight line), therefore, the equation used would be 2x+50=180

to find x you must solve the equation 2x+50=180

work shown:

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A square playground is surrounded by a sidewalk on all sides. The sidewalk is 2n+3 yards along each side. The sidewalk is 0.5 ya
soldi70 [24.7K]

Answer: It  can be calculated by using the formula of perimeter and by adding four sides

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Step-by-step explanation:

As it is a square playground all its sides are equal

Perimeter of the sidewalk = 2(L+B)= 2(2n+3+0.5)= 2(2n+3.5)= 4n+7

Perimeter of the square playground= <em><u>2(L+B)</u></em>= 2(2n+3+2n+3)

<em>2(4n+6)= 8n+12-------------------------A</em>

Perimeter of the square playground<u><em>= L+L+L+L=4L</em></u>  42n+3+2n+3+2n+3+2n+3=<u><em>4(2n+3)= 8n+12------------------------B</em></u>

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3 years ago
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Answer:

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Step-by-step explanation:

4.5%.5=9 so the cook made 9 servings.

7 0
2 years ago
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Answer:

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Step-by-step explanation:

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