3 years ago

Which pairs of numbers has have a greatest common factor of 7

Mathematics

1 answer:

vodomira [7]3 years ago

8 0

14

need more letters

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Batman can clean up all of the crime in Gotham City in 8 hours working alone. Robin can do the same job alone in 12 hours. If Ro

scoray [572]

<h2>The crime gets cleaned up at 2:00 PM</h2>

Step-by-step explanation:

Let the work be w.

Batman can clean up all of the crime in Gotham City in 8 hours working alone.

$\texttt{Rate of batman,}r_b=\frac{W}{8}$

Robin can do the same job alone in 12 hours.

$\texttt{Rate of Robin,}r_r=\frac{W}{12}$

Robin starts work at 8:00 AM and Batman Joins at 10:00 AM.

Let the time of completion of work after Batman's joining be t.

We have time of working of Robin = t + 10:00 -8:00 = t + 2

$t\times \frac{W}{8}+(t+2)\times \frac{W}{12}=W\\\\12t+8t+16=96\\\\20t=80\\\\t=4hours$

After 4 hours of 10:00 Am work gets completed.

Time = 10:00 AM + 4 hours = 2:00 PM

The crime gets cleaned up at 2:00 PM

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3 years ago

I need help please! i don’t understand this problem and it’s very confusing. hellllppp!!!

Elodia [21]

Check the picture below.

make sure your calculator is in Degree mode.

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Which function is graphed below? a) y=1/3(3)^x b) y=3(1/3)^x c) y=(1/2)^x+2 d) y=(2)^x-1

Serjik [45]

Answer:

Step-by-step explanation:

The quickest way to do this is to use a graphing calc or an online graphing program and graph each problem. When you do so, you should get B. y=3(1/3)^x as your answer.

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I wish to have $10,000 at the end of 8 years in a bank offering a simple interest rate of 7.5% per year. How much should I depos

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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