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xenn [34]
3 years ago
7

A builder was building a fence. In the morning, he worked for 2/5 of an hour. In the afternoon, he worked for 9/10 of an hour. H

ow many times as long as in the morning did he work in the afternoon? Write a division equation to represent this situation, then answer the question. Show your reasoning. If you get stuck, you can draw a diagram.
Mathematics
2 answers:
Bas_tet [7]3 years ago
4 0

Hey there! I'm happy to help!

We want to see how many times bigger 2/5 is than 9/10. Let's call how much bigger 2/5 is b and solve below.

9/10b=2/5   (2/5 is b times larger than 9/10)

We divide both sides by 9/10, so your division would be 2/5÷9/10.

b=4/9

Therefore, the builder worked 4/9 times as long in the morning as he did in the afternoon.

Have a wonderful day! :D

zalisa [80]3 years ago
3 0

Answer:

2/9 times

Step-by-step explanation:

This is because 2/5 divided by 9/10 = 10/45 wich if we simplify it we get 2/9  so that's why 2/9 is the right answer.  

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Answer:

tn=a+(n-1)d

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tn=22+4n-4

tn=4n+18

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3 years ago
In how many ways can six people sit in a six-passenger car?
nekit [7.7K]

Answer:

number of ways = 720

Step-by-step explanation:

The number of ways  six people sit in a six-passenger car is given by the number of permutations of 6 elements in 6 different positions ( seats), then

number of ways = number of permutations of 6 elements = 6! = 6 * 5 * 4 *3 * 2 * 1 = 720

Since the first person that sits can be on any of the seats , but then the second person that sits can choose any of 5 seats (since the first person had already occupied one) , the third can choose 4 ... and so on.

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3 years ago
Can someone help me on this one please thank you
MatroZZZ [7]
Ask SAPPHIREMOON, and they'll give you the answer, because I can't do math
5 0
3 years ago
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Find the solution to each equation:
solniwko [45]
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6 0
3 years ago
Polygon Q is a scaled copy of polygon P using a scale factor of 1/2. Polygon Q's area is what fraction of Polygon P's area.
DaniilM [7]

Answer: Polygon Q's area is 1/4 of Polygon P's area

======================================================

Explanation:

Imagine we had a square with side length 8. The area of this square is 8*8 = 64.

Now let's reduce each side of the square by the scale factor 1/2. So each new side is 8*(1/2) = 4. The area of this smaller square is 4*4 = 16.

Comparing the new area (16) to the old one (64), we see that the new area is 16/64 = 1/4 of the old area.

In other words,

new smaller area = (1/4)*(old larger area)

So this is one example to see why (1/2)*(1/2) = 1/4 is the area scale factor based on the linear scale factor of 1/2. In short, (1/2)^2 = 1/4. Whatever the original scale factor is, square it and you'll get the area scale factor.

4 0
3 years ago
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