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3 years ago

Alex has a job delivering newspapers. He puts 20% of his earnings each week into his college savings account. Each week he puts

$16 into the account. When Alex has worked for one year, he will get a raise that is equal to 15% of his current earnings. How much more money will he earn each week? P.S his current earnings are $80

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

7 0

$80 \times 0.15 = 12$

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Lostsunrise [7]

Answer:

A) 50

B) 20

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Step-by-step explanation:

To solve the first question, we can multiply both sides by 10.

Thus, we get:

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Then, divide by 6, to get x:

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You can do the same thing to all of these questions.

I've already checked the answers, but if you don't trust them, just pluck the values in.

For example, let's check the answer for question A.

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Does it equal? Yes, so we know that the answer is correct.

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Step-by-step explanation:

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3 years ago

Is (3,2) a solution of -8x-2y<6

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Answer:

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3 years ago

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nirvana33 [79]

Answer:

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Read 2 more answers

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.

Now we can calculate the speed of the trains in feet per second so:

$S1=\frac{45*5280}{3600}=66$

$S2=\frac{60*5280}{3600}=88$

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:

$h=\sqrt{66^{2} +88^{2} } =\sqrt{4356+7744}$

$h=\sqrt{12100}=110$

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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