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2 years ago

for every 4 boys at a soccer camp ,there is 2 girls .If there are 21 children at a soccer camp,how many are girls?

Mathematics

2 answers:

katovenus [111]2 years ago

8 0

7 girls are at the soccer camp.

Vadim26 [7]2 years ago

4 0

4+2+4+2+4+2+3=21

15 boys, 6 girls.

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2 years ago

A man spent 58% of his income and the amount of money left was $210. Find his income

professor190 [17]

Answer:

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Step-by-step explanation:

$\frac{42\%}{210}=\frac{100\%}{x}$

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2 years ago

How many gallons of a 70% antifreeze solution must be mixed with 60 gallons of 20% antifreeze to get a mixture that is 60% a

Flura [38]

We have 60 gallons of 20% antifreeze.

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We'll make "x" the gallons of 70% we must add.

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Source

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3 years ago

Which relation is a function? Help please

WARRIOR [948]

Answer:

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Step-by-step explanation:

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1 year ago

Read 2 more answers

How do i find the volume of these similar solids? round to the nearest tenth HELP

FromTheMoon [43]

Answer:

The volume of the larger solid is $592.6\ mm^3$

Step-by-step explanation:

<u><em>The question is</em></u>

If these solids are similar, find the volume of the larger solid

step 1

Find the scale factor

we know that

If two solids are similar, then the ratio of its corresponding sides is proportional and this ratio is called the scale factor

Let

x ----> the height of the larger solid in mm

y ----> the height of the smaller solid in mm

z ---> the scale factor

$z=\frac{x}{y}$

we have

$x=4\ mm\\y=3\ mm$

substitute

$z=\frac{4}{3}$ ---> scale factor

step 2

Find the volume of the larger solid

we know that

If two solids are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

x ----> the volume of the larger solid in cubic millimeters

y ----> the volume of the smaller solid in in cubic millimeters

z ---> the scale factor

$z^3=\frac{x}{y}$

we have

$z=\frac{4}{3}$

$y=250\ mm^3$

substitute the values

$(\frac{4}{3})^3=\frac{x}{250}$

solve for x

$(\frac{64}{27})=\frac{x}{250}$

$x=250(\frac{64}{27})$

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3 years ago