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Lelu [443]
3 years ago
8

The track team is trying to reduce their time for a relay race. First they reduce their time by 2.1 minutes. Then they are able

to reduce that time by 1/10. If their final time is 3.96 minutes, what was their beginning time?
What was the track teams initial relay time in minutes?
Mathematics
1 answer:
klemol [59]3 years ago
3 0
Answer: 15.7 minutes

Step-by-step explanation:

Let x be the time in the beginning (in minutes).

Given: The track team is trying to reduce their time for a relay race.

First they reduce their time by 2.1 minutes.

Then they are able to reduce that time by 10

If their final time is 3.96 minutes, then

x-t1-t2= 3.6
x= 3.6+ t1+ t2
x= 3.6+ 2.1+ 10
x= 15.7

Hence, their beginning time was 15.7 minutes.
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The midsegment of a trapezoid is parallel to each base, and its length is one-half the sum of the lengths of the bases.

Step-by-step explanation:

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3 years ago
John’s gross pay for the week is $500. He pays 1.45 percent in Medicare tax, 6.2 percent in Social Security tax, 2 percent in st
olchik [2.2K]
Gross pay = 500

deductions :
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gross pay - deductions = net pay
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7 0
3 years ago
Write a summary can Smartphones improve student lives? why or why not ( in your own words )
bonufazy [111]

Answer:

Smartphones can imrove student lives by giving students the ability to contact their teachers to ask questions or comment on a specific work. they can also allow the student to look up answers and learn from what others think. Smartphones can also add distractions in class and allow an easy way to cheat on a test or a quiz. Overall Smartphones can be beneficial and harmful to a students life.

Step-by-step explanation:

4 0
3 years ago
How can parentheses be added to the following equation to make it true?
Viktor [21]

Answer:

8 - (3 x 2) - (1 + 1) = 0

or

8 - 3 x 2 - (1 + 1) = 0

Remember PEMDAS.

If I put parenthesis around 3 x 2, I get 6.

But 8 - 6 = 2

How can we make 2 - 1 + 1 = 0?

If we look at PEMDAS, we know (2 - 1) + 1 = 2, but the answer needs to be 0.

So now try 2 - (1 + 1) and that gives me 0.

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5 0
3 years ago
Helppppppppp
leva [86]
Answer: 14 feet. a. The Pythagorean theorem is a^2 + b^2 = c^2, where a and b are the sides of a right angle. By plugging in the sides of the wall, and solving for c, you can find the answer. 10^2 + 10^2 = c^2
| 100 + 100 = c^2 | 200 = c^2 | c = sqrt 200 | c = 14. The other way to solve this would be using the trig functions. You know that the angle between the hypotenuse and the wall side is 45 degrees, so you can use Sine to determine the hypotenuse. Sine is equal to opposite over hypotenuse. Sin (45) = 10/h | Sin (45) * h = 10 | h = 10/Sin (45) | h = 14. Both of the methods result in 14.
8 0
3 years ago
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