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labwork [276]
3 years ago
11

The ratio of the number of boys to girls is 5:7 if there are 600 studens in school how many girls are there

Mathematics
1 answer:
Art [367]3 years ago
8 0

Answer:

There would be 350 girls in the school.

Step-by-step explanation:

We can find this by creating two proportions. the first fraction would be the number of girls out in the sample:

7/12

The second part would be the amount of girls in the whole school. We can set the girls as x since we do not know.

x/600

Now we can set the two equal to each other and cross multiply.

7/12 = x/600

600*7 = 12*x

4200 = 12x

350 = x

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Ten thousand raffle tickets are sold for $1 each. One first prize of $2000, 4 second prizes of $700 each, and 8 third prizes of
Nina [5.8K]

Answer:

72 cents.

Step-by-step explanation:

The expected winnings is the amount times the probability that you will get that amount.

2,000 * (1/10,000) = 2,000 / 10,000 = 2 / 10 = 0.2.

700 * (4 / 10,000) = 2,800 / 10,000 = 28 / 100 = 0.28.

300 * (8 / 10,000) = 2,400 / 10,000 = 24 / 100 = 0.24.

0.2 + 0.28 + 0.24 = 0.72.

Hope this helps!

4 0
3 years ago
two cars travel in opposite directions, starting from the same place at the same time. One travels at an average rate of 48 mile
asambeis [7]
So in 1 hour they will be 48+55=103 miles apart
how many hours will it be in 618
103 times x hours=618
divide both sides by 103
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the answer is 6 hours
6 0
3 years ago
One brand of coffee is packaged in cylinders where the height is equal to the radius, r. The volume of the package, in cubic cen
aliya0001 [1]

Answer:

<h2>C(V(r)) = 3.2πr3</h2>

Step-by-step explanation:

This problem is a composition of function defined by C(V(r)), now we have the functions V(r)= \pi r^{3} and C(V)=3.2V, where the first depends on the radius, and the second dependes on the volume, that means, to find the number of ounce of coffe, we need to determine the volume of the cylinder, that's why we have to replace the volume function inside the ounces function,

C(V(r))=3.2(\pi r^{3} )

Therefore, the right answer is the last choice.

8 0
3 years ago
NEED ANSWER ASAP WILL GIVE THANKS + BRAINLIEST
il63 [147K]

\\ \sf\longmapsto f(x)=2x^2-3x+1

\\ \sf\longmapsto f(1)=2(1)^2-3(1)+1

\\ \sf\longmapsto f(1)=2(1)-3+1

\\ \sf\longmapsto f(1)=0

Now

\\ \sf\longmapsto f(2)=2(2)^2-3(2)+1

\\ \sf\longmapsto f(2)=2(4)-6+1

\\ \sf\longmapsto f(2)=8-5

\\ \sf\longmapsto f(2)=3

4 0
2 years ago
Read 2 more answers
What is 15% of $24.00?
NARA [144]
(.15)(24)= $3.6 That would be the answer
8 0
3 years ago
Read 2 more answers
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