If the relationship of girls to boys in two different grades are proportional, they must have the same ratio. To tackle this problem, we can find the ratios of genders in each grade and compare them.

Step 1, finding ratios:

Finding ratios is just like simplifying fractions. We will reduce the numbers by their greatest common factors.

GRADE 6:

$9:12=\\3:4$

GRADE 7:

$12:18=\\2:3$

GRADE 8:

$15:20=\\3:4$

GRADE 9:

$25:36$

Can't be simplified!

Step 2:

Notice how grades 6 and 8 both had a ratio of 3:4. We can conclude that these two grades have a proportional relationship between girls and boys.

I hope this helps! Let me know if you have any questions :)

8 0

3 years ago

Consuelo living room is in the shape of a rectangle and haa an area of 360 square feet. the width of the livingroom is 5/8 its l

Ad libitum [116K]

360=LW
W=5/8 L 

360=L*5/8 L=5/8 L^2 
L^2=8*360/5=8*72 
L=sqrt(4*144)=24
The length is 24

4 0

3 years ago

3w = -27 (equation)

kotykmax [81]

W=-9

Explanation: 3w=-27

Divide 3 from -27

-27 divided by 3 = -9

5 0

3 years ago

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