Mr. Chang’s class has 28 students, 4 Over 7 of whom are girls. Which equation shows how to determine the number of girls in Mr. Chang’s class? 28 divided by 4 Over 7 = 49
Image with alt text: 28 divided by 4 Over 7 = 49

28 times 4 Over 7 = 16
Image with alt text: 28 times 4 Over 7 = 16

4 Over 7 divided by 28 = 1 Over 49
Image with alt text: 4 Over 7 divided by 28 = 1 Over 49

7 Over 4 divided by 28 = 1 Over 16

In Mr. Changs class

there are 28 students in total

4 over 7 = 4/7 = out of every 7 students 4 are girls.

2 - Use mathematical reasoning

To figure out how many girls;

Out of the for every 7 students of the 28 total 4 are girls

With that in mind we'll need to know how many groups of 7 there are which is 28/7

We know now that there are 4 groups of 7 students, so with there being 4 girls in each group, we multiple 4 girls across each group which is 4 x 4

This equals 16

To summarize what I did, I divided 28 by 7 and multiplied that by 4 (How many girls per) which is the same as multiplying 28*4 and dividing that by 7

which is the same as 28 x 4/7

Reasoning

where are the choices?

dc=6 square root of 3 and ac is 12 square root 3

c and d

step-by-step explanation:

square root of 3/2 = 18/c

cross multiply to get 18*2=√3*c

36/√3 * √3/√3 = c

c= 36*√3/3

c=12√3