45% of the 6th graders at Dutchtown Middle went to the Valentine's Dance. If 126 students went to the dance, how many 6th grade students are there at Dutchtown Middle?

There are 280 6th grade students at Dutchtown middle

Step-by-step explanation:

In this question, we are asked to

calculate the number of students at Dutchtown middle.

Firstly, let the number of students be x.

From the question, 45% of this number which equals 126 went to the Valentine’s dance.

Mathematically, this can be represented as follows;

45/100 * x = 126

45x = 126 * 100

45x = 12,600

x = 12600/45

x= 280

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)