There are 12 students in a class who are performing at the school concert. this represents 40% of the class. how
many students are in the class?

There are 30 students in the class.

Given the following data;

To find how many students are in the class i.e the total number of students;

We would write a mathematical expression as follows;

×

Simplifying, we have;

×

Next, we would divide both sides by 0.4;

T = 30 students

Therefore, there are 30 students in the class.

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There are 30 students in the class.

Given that there are 12 students in a class who are performing at the school concert, and this represents 40% of the class, to determine how many students are in the class the following cross multiplication calculation must be performed:

Therefore, in total there are 30 students in the class.

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1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right