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Mnenie [13.5K]
3 years ago
7

S a punishment for something naughty that we did, my little brother and I have to whitewash both sides of a fence. We start at t

he same time, and we each work at a constant rate.
If we each whitewash one side, I'll finish in 2 hours and my brother will finish in 3 hours. But I'm a nice kid, so after I finish my side, I go around to the other side and help my brother finish his side. From the time I start helping him, how many minutes does it take us to finish the job?

Hint(s):

How many sides per hour can I paint? How about my brother? How about both of us together?
Mathematics
1 answer:
Step2247 [10]3 years ago
8 0
Two and a half hours.
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5 magazines and 3 books cost $41.50. 2 magazines and 5 books cost $42.25. Find the cost of each item.
WINSTONCH [101]

Answer:

The Magazines each costed $8.30 and the books cost $13.80 for the amount of $41.50. and the 2 magazines and 5 books for $42.25 the 2 magazines is $21.12 for each and $8.45 for each book.

Step-by-step explanation:I got the answers by taking the total cost and taking the number of books or if it was a a magazine and I would divide it by lets just say you have 42.25 dollars you would divide that by 3 and you would do it for every item with the total cost.

6 0
3 years ago
How to solve this problem??
slega [8]
\frac{2}{3} =  \frac{18}{x+5}

multiply each side by x+5
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8 0
3 years ago
What is the scale factor of dilation? (1 point)
dusya [7]

Answer:

On a coordinate plane, triangle A B C has points (4, 4), (7, 8), (10, 4). ... Hence, the scale factor is 2 and one-half( ).

Step-by-step explanation:

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6 0
3 years ago
The temperature in Quebec City was 5°C at 4 pm. By midnight, the temperature dropped 15 degrees.
TEA [102]

Answer:

Point A.

Step-by-step explanation:

We know that the temperature dropped 15 degrees, and that it was initially of 5°C. So, by midnight, the temperature will be of -10°C (5-15=-10).

We also know that the distance between points is of 5°C. So, the point that we have to mark is point A, which represents -10°C.

7 0
3 years ago
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9 mugs for $45<br><br> What is the rate?<br><br> And what is the unit rate?
andrew-mc [135]

Answer:  The unit rate is $5 per  mug.

Step-by-step explanation:

To find the the unit rate, you will find the amount  one mug will cost.

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45 / 9 = 5  

6 0
3 years ago
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