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tankabanditka [31]
3 years ago
10

a professional driver completes one lap around the track at Daytona International Speedway which is 2.5 miles long at 80 miles p

er hour. is it possible for the driver to drive the second lap and make his overall average 160 miles per hour​
Mathematics
1 answer:
zloy xaker [14]3 years ago
3 0

No it is no possible because he would have had to had completed both laps in the time it took him to complete his first lap, but because he has already used that time, it is impossible.

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Answer:

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3x+y=115x-y=21 Directions: Solve each system of equations by elimination. Clearly identify your solution.
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To solve, we will follow the steps below:

3x+y=11 --------------------------(1)



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adding equation (1) and (2) will result;

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divide both-side of the equation by 8

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1 year ago
An investor invested a total of $2,800 in two mutual funds. One fund earned 5% profit while the other earned 3% profit. If the i
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Answer:

The amount invested in the mutual fund that earned 5% was $1,000

The amount invested in the mutual fund that earned 3% was $1,800

Step-by-step explanation:

Let

x ----> the amount invested in the mutual fund that earned 5%

y ----> the amount invested in the mutual fund that earned 3%

we know that

x+y=2,800 ----> y=2,800-x ----> equation A

5\%=5/100=0.05

3\%=3/100=0.03

0.05x+0.03y=104 ----> equation B

Solve the system by substitution

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0.05x+84-0.03x=104

0.05x-0.03x=104-84

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x=\$1,000

<em>Find the value of y</em>

y=2,800-x

y=2,800-1,000=\$1,800

therefore

The amount invested in the mutual fund that earned 5% was $1,000 and the amount invested in the mutual fund that earned 3% was $1,800

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