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adelina 88 [10]
3 years ago
5

The 6th graders are running the mile in physical education. Elian finishes the mile 2 minutes before Stacey who finished 1 minut

e 26 seconds after Kareem, and her time is 8 minutes 43 seconds. What is Elians time?
Mathematics
1 answer:
HACTEHA [7]3 years ago
4 0
Hi there! So, you already know Kareem's time, which is 8 minutes 43 seconds. Stacey finished after Kareem, which means her time was lover and Elian finished 2 minutes sooner than Stacey. To find the times, you have to add and subtract, depending on the situation. If you are adding time and the seconds exceed 60, you have to add 1 into the minutes section. With that bridals, here are the answers if you add correctly.

Kareem: 8 minutes 43 seconds
Stacey: 10 minutes 9 seconds
Elian: 8 minutes 9 seconds

Elian's time is 8 minutes 9 seconds
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Depends on MPH or Miles Per Hour.

Going 10 mph = 30 minutes

Going 50 mph = 10 minutes

Etc.


8 0
2 years ago
Evaluate each of the following to three significant figures, and express each answer in SI units using an appropriate prefix: (a
Softa [21]

Answer:

a). 4.86\times 10^{-15} m

b). 4.21\times 10^{-2} m³

c). 7.00\times 10^{3} N²

Step-by-step explanation:

In this question we have to convert each option into SI units.

a). 4.86(10^{-6})^{2} mm

= 4.86\times (10^{-12})\times (10^{-3} ) m

= 4.86\times 10^{-15} m

b). (348 mm)³

= (348)^{3}\times (10^{-3})^{3} m³

= 42144192\times 10^{-9} m³

= 4.21\times 10^{-2} m³

c). (83700)^{2}\times (10^{-3})^{2} N²

= 700569\times 10^{4}\times 10^{-6} N²

= 7.00\times 10^{9}\times 10^{-6}N^{2}

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3 years ago
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7 0
3 years ago
The sum of two polynomials is –yz2 – 3z2 – 4y + 4. If one of the polynomials is y – 4yz2 – 3, what is the other polynomial? –2yz
marishachu [46]

The first polynomial is y -4yz^2-3 and let the second polynomial be P(y,z).

If the sum of two polynomials is -yz^2-3z^2-4y+4, then y-4yz^2-3+P(y,z)=-yz^2-3z^2-4y+4.

Take the first polynomial from the left side to the right side:

P(y,z)=-yz^2-3z^2-4y+4 -(y-4yz^2-3),\\ P(y,z)=-yz^2-3z^2-4y+4 -y+4yz^2+3,\\ P(y,z)=3yz^2-3z^2-5y+7.

Answer: the second polynomial is 3yz^2-3z^2-5y+7.

3 0
3 years ago
Read 2 more answers
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suter [353]

Answer:

a) 91 1/6 gallons

b) 2502 miles

Step-by-step explanation:

You are given a number of miles and a number of gallons for the car. The ratio of these numbers is ...

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We presume this value is constant for this car. Then the questions can be answered by forming and solving a proportion:

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___

b) Same deal, but the miles are unknown.

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Multiplying by 139 gal gives ...

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139 gallons of gasoline will let Mary drive 2502 miles.

3 0
2 years ago
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