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alekssr [168]
3 years ago
14

Please help me I will give BRAINLIST and a like I rlly need help

Mathematics
2 answers:
kirza4 [7]3 years ago
7 0

Answer:

?=3

Step-by-step explanation:

a= 3/5 b - 7

Sophie [7]3 years ago
4 0

Answer:

the number that should be in the green box is 3

Step-by-step explanation: since it is three-fifths, in numerical way, it should be written as 3/5..

7 less than three fifths of b is a gives 3/5b-7=a

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Genius question: A long level railway bridge passes over a railroad track, which is 100 feet below it and at right angles to it.
nataly862011 [7]

Answer: <u>110 feet per second</u>

Step-by-step explanation:

In this problem we will assume that the car at 45 miles per hour is moving into the x direction with a high of 100 feet, and the train is going in the y direction, so they trajectories will made an angle of 90º.

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So we can make a right triangle with sides 66 and 88 and the hypotenuse will be the rate that the trains will separate per second so:

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Is important to have in mind that the initial high is not going to change how fast the trains will separate, however, if we are going to calculate the distance we should have it in the calculations.

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3 years ago
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Step-by-step explanation:

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