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geniusboy [140]
4 years ago
11

if it takes 4 men 6 hours to repair rust how long will it take seven men to do the job if they work at the same rate​

Mathematics
2 answers:
Nataliya [291]4 years ago
6 0

Answer:

3.43 I believe

Step-by-step explanation:

I'm not too sure but I tried this:

  • 4 men take 6 hours mean it is a ratio of 4:6 so 1 : 1.5
  • I then multiplied 1.5 by 7 and got 10.5
  • I found what percent 6 is of 10.5 and got about 57 percent
  • I used that percent and multiplied it by 6 and got 3.42857..

Or what percent 4 is of 7. I got the same answer with less steps.

lesya [120]4 years ago
4 0

Answer:

3 1/3 hours is the answer

Step-by-step explanation:

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Show work please~
love history [14]

For every 1 cup of blue paint, \frac{10}{4} cups of red paint are needed

For every 1 cup of red paint, \frac{4}{10} cup of blue paint is needed

For every 4 cups of red paint, \frac{16}{10} cups of blue paint are needed

<em><u>Solution:</u></em>

Given that, there are 3 1/3 red cups of paint for every 1 1/3 cups of blue paint

Therefore, ratio is

Red : blue = 3\frac{1}{3} : 1\frac{1}{3}\\\\Red : blue = \frac{10}{3} : \frac{4}{3}

<h3><u>For every 1 cup of blue paint, ___ cups of red paint are needed</u></h3>

Let "x" be the cups of red paint needed

Then we get,

\frac{10}{3} : \frac{4}{3}\\\\x : 1

This forms a proportion

1 \times \frac{10}{3} = \frac{4}{3} \times x\\\\x = \frac{10}{4}

Therefore, 10/4 cups of red are needed for 1 cup of blue

<h3><u>For every 1 cup of red paint, ___ cup of blue paint is needed</u></h3>

Let "x" be the cups of blue paint needed

Then, we get

\frac{10}{3} : \frac{4}{3}\\\\1 : x

This forms a proportion

\frac{10}{3} \times x = \frac{4}{3} \times 1\\\\x = \frac{4}{10}

Thus, 4/10 cups of blue are needed for 1 cup of red paint

<h3><u>For every 4 cups of red paint,___ cups of blue paint are needed</u></h3>

Let "x" be the cups of blue paint needed

Then, we get

\frac{10}{3} : \frac{4}{3}\\\\4 : x

This forms a proportion

\frac{10}{3} \times x = \frac{4}{3} \times 4\\\\x = \frac{16}{10}

Thus 16/10 cups of blue paint are needed for every 4 cups of red paint

5 0
3 years ago
For the girl to lift this rock, she must push down with a force _____.
suter [353]

Answer:

B.

Step-by-step explanation:

B. The girl would have to use less force because she is using a simple machine, or a lever. The lever makes it easier to lift the rock because the rock is closer to the fulcrum.

4 0
4 years ago
SOMEONE HELP ASAP PLEASE?
hammer [34]

Answer:

B is the correct answer.

Step-by-step explanation:

6 0
3 years ago
Can someone explain major and minor arcs in relation to circles.
Lelechka [254]
A Major Arc within a circle is something that that is more than half of the circle, and therefore, larger than the minor arc. The way in which this could be used in an example is; Tony has a pizza with 8 slices, 6 of these slices are pepperoni and 2 are chilli beef. In this case, the pepperoni slices are the major arc and the chilli beef slices are the minor arc.
The Major Arc will always be bigger than the minor arc- whether this is 181 degrees to 179, or whether this is 350 degrees to 10 degrees.
The Minor Arc is always the smallest arc, and this can be explained by; Benedict has an apple pie that has 10 slices, between him and his friends, they have eaten four slices. In this case, they have eaten the 'minor arc'
There is a picture attached, and this is the examples of a major and a minor arc.
Hope this has been able to help you :) 

3 0
4 years ago
A cube has a volume of 512 mm^3. If all sides of the cube are divided by 4, what will the resulting volume be?
pshichka [43]
\bf \textit{volume of a cube}\\\\&#10;V=s^3\qquad \boxed{s=\frac{s}{4}}\implies V=\left( \cfrac{s}{4} \right)^3\implies V=\cfrac{s^3}{4^3}\implies V=s^3\cdot \cfrac{1}{4^3}&#10;\\\\\\&#10;V=s^3\cdot \cfrac{1}{64}\impliedby \frac{1}{64}\textit{ of the original volume, if the original was 512}&#10;\\\\\\&#10;512\cdot \cfrac{1}{64}\implies \cfrac{512}{64}
3 0
3 years ago
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