All categories

3 years ago

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:

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)

You might be interested in

Jose will travel 268 kilometers with his family this weekend. How many miles will he travel? Use the conversion table to find

mixer [17]

Answer:

166.5275

Step-by-step explanation:

i looked it up

3 0

4 years ago

Read 2 more answers

Where would you put the parentheses in the expression thirty-four minus twelve divided by two plus seven so that the value is ei

Nat2105 [25]

((34 - 12) / 2) + 7 = 18

((22) / 2) + 7 = 18

(11) + 7 = 18

18 = 18

3 0

3 years ago

Does it lie inside, outside, or on the circle?

FrozenT [24]

Answer:

Given circle:

(x - 4)² + y² = 25

The center is at (4, 0) and the radius is 5 units

Lets find the distance from (7, 2) to the center of the circle:

$d = \sqrt{(7 - 4)^2 + (2 - 0)^2} = \sqrt{9+4} = \sqrt{13} < 5$

Since d < 5, the point (7, 2) lies inside the circle

8 0

3 years ago

The positive square root of 72 lies between what pairs of integers?

Softa [21]

The square root of 72 lies between 8 and 9

6 0

3 years ago

The mean age of 11 women in an office is 31 years old.

BlackZzzverrR [31]

Answer: 30.2

Explanation:

The mean is calculated by taking the sum of the values and dividing by the count.

For instance, for the 6 women, with the mean being 31, we can see that the ages summed to 186:

186

And we can do the same for the men:

116

And now we can combine the sum and count of the men and women to find the mean for the office:

186

116

302

30.2

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers