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Wewaii [24]
3 years ago
11

Takes a smaller hose 4 times as long to fill a small swimming pool as it does a larger hose. It takes both hoses working togethe

r 20 minutes to fill the
Swimming pool. How long will it take the smaller hose to fill the pool by itself?
Do not do any rounding
Mathematics
1 answer:
matrenka [14]3 years ago
4 0
It will take 80 minutes to fill the pool 20x4=80
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3 0
4 years ago
Read 2 more answers
Some girls in a Girl Scout troop are pairing up with some boys in a Boy Scout troop to practice square dancing. Two-thirds of th
Natalka [10]

Answer:

Fraction of the scouts are square dancing is \frac{19}{30}.

Step-by-step explanation:

Each pair  is one Girl Scout and one Boy Scout.

So,  to  the final fraction ( of the pairs) we are going to get 1/2 from the fraction of girls and 1/2 from the fraction of boys.  

Girls= \frac{2}{3} *\frac{1}{2} =\frac{2}{6}

Boys= \frac{3}{5} *\frac{1}{2} =\frac{3}{10}

To get the fraction of the scouts that are square dancing,  we have to add the fraction of girls ,  with the fraction of boys.  

=\frac{2}{6} +\frac{3}{10}

=\frac{(2*10) +(6*3)}{6*10} =\\ \frac{20+18}{60}

=\frac{38}{60}

=\frac{19}{30}

This means that  from 30 scouts ,  19 are dancing.  

5 0
3 years ago
Solve for r <br><br> 5-2(1-6r)=24
sammy [17]
You will get r= 21/12 but you have to simplify to get R=7/4 or R=1.75
5 0
3 years ago
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If ☆ x 2 = 0, then ☆ 8 will equal:<br> 0 + 6<br> O + 8<br> 0 x 2<br> O X4<br> 0 x 8
soldier1979 [14.2K]
The last one I think
3 0
3 years ago
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Vikki [24]

Answer:

Radius = 2 cm.

Step by step explanation:

By the Pythagoras theorem  the third side of the triangle

= sqrt (6^2 + 8^2)cm = sqrt100 = 10cm.

The formula for the radius of the circle is

r = sqrt [ (s - a)(s-b)(s-c)/ s ]  where a,b,c are side lengths and s = the semi perimeter.

Here s = ( 6+8+10) / 2 = 12

So the radius r  

= sqrt [ (12-6)(12-8)(12-10)/ 12 ]

= sqrt 4

= 2 (answer).

3 0
3 years ago
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