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sdas [7]
3 years ago
14

Fred washes a car in 6 minutes, Carl washes a car in 8 minutes. If they wash a car together then how long will it take?

Mathematics
2 answers:
kondor19780726 [428]3 years ago
8 0

Based on the problem Carl will complete...

1/6 of the job per minute.

Fred will complete 1/8 of the job per minute.

Together they will complete... 1/6+1/8 of the job per minute.

That would be 7/24.

How long will that take?

1/(7/24)=24/7=3 3/7

It will take 3 and 3/7 minutes to finish washing the car.

Ksju [112]3 years ago
6 0

Answer:

3.5 minutes.

Step-by-step explanation:

If Fred can wash 1/6 of a car in 1 minute and Carl can was 1/8 of a car in a minute as well then together in 1 minute it would be:

= 1/6 + 1/8

= 4/24 + 3/24

= 7/24

= 3\frac{3}{7\\}

= 3.429

So we have:

≈ 3.5 min

I hope this helps!

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(7,5), (r,9) m=6<br><br> What is r?
Igoryamba

Answer:

The answer is that r = 7/6

Step-by-step explanation:

Given point: (7, 5)

Given slope: m = 6

Use the point slope form of the equation:

y - y1 = m(x - x1)

y - 5 = 6(x - 7)

y - 5 = 6x - 7

y = 6x + 2

Now, find r for the point (r, 9) by substitution:

9 = 6x + 2

6x + 2 = 9

6x = 7

x = 7/6

Proof:

y = 6x + 2

f(x) = 6x + 2

f(7/6) = 6(7/6) + 2

= 42/6 + 2

= 7 + 2 = 9, giving (7/6, 9). r = 7/6

Hope this helps! Have a great day!

4 0
3 years ago
Ms. Young acquired a loan of $40,000 at her local bank. The loan has a simple interest rate of 6% per year. What is the amount o
soldier1979 [14.2K]

Answer:

12.000

Step-by-step explanation:

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8 0
3 years ago
20) Use the distributive property to factor the expression. 10xz − 20yz A) z(10x − 20y) B) 10(xz − 2yz) C) 10z(x − 2y) D) xyz(10
vekshin1

Answer:

The correct answer is C) 10z(x − 2y)

Step-by-step explanation:

To find this, we look for the greatest common factor of those two numbers. Each can be divided by 10 and each have a z. So we divide each term by 10z and put that on the outside of the parenthesis.

5 0
4 years ago
Can you please help me?!
Nezavi [6.7K]

Answer:

d) x=5

Go to station 10

Step-by-step explanation:

-\left(1+7x\right)-6\left(-7-x\right)=36

Expand:

-1-7x+42+6x=36

-x+41=36

Subtract 41 from both sides:

-x+41-41=36-41

-x=-5

Divide both sides by -1:

\frac{-x}{-1}=\frac{-5}{-1}

x=5

3 0
3 years ago
Read 2 more answers
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You will have 13 cans left over.

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4 years ago
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