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ahrayia [7]
3 years ago
10

we said that the ratio of girls to boys in the class was 2:9. if there were 90 boys in the 9th grade, how many girls are there

Mathematics
2 answers:
soldi70 [24.7K]3 years ago
8 0

20 girls

Step-by-step explanation:

For every 9 boys there are 2 girls, so, if we have 90 boys, 9x10=90 and then since we have the 10 we use it to do 2x10 to get 20 girls

Juliette [100K]3 years ago
7 0

Answer:

20

Step-by-step explanation:

If the ratio of boys is 9 there are 90 boys. If 9=90 then 1= 10. 10 x 2 = 20

I hope this helps :0)

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Find the value of x in the equation below. 60 = 10 x​
Ede4ka [16]

Answer:

Just do 60 divided by 10

Step-by-step explanation:

60=10 x  10 times 6 = 60 so x=6

7 0
3 years ago
Read 2 more answers
Angelica earns d dollars for babysitting each week. She also receives an allowance of $10 per week. The expression (10+d)∙5 can
Katyanochek1 [597]

Answer:

The amount of money Angelica will have at the end of five weeks if d = $25 is $175.

Step-by-step explanation:

The given information are;

The allowance Angelica earns for baby sitting = d dollars per week

The amount she receives as allowance = $10 per week

The amount she will have at the end of 5 weeks = (10 + d)·5

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A = (10 + 25) × 5 = $175

The amount of money Angelica will have at the end of five weeks if d = $25 is $175.

7 0
3 years ago
A cylinder had a diameter of 17 cm and a height of 11 cm. ehat is the volume of the cylinder​
tester [92]

Answer:

2496.78

Step-by-step explanation:

7 0
3 years ago
The area of the sector formed by the 110 degree central angle is 40 units squared what is the radius
olga2289 [7]
We know that
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the answer is
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7 0
3 years ago
Substitution method need help for home work
Marizza181 [45]
-3y = x...so we sub in -3y for x in the other equation

-x + 7y = 70
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-3y = x
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so ur solution is (-21,7)
6 0
3 years ago
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