During the past school year, there were 640 students and 52 teachers. What is the ratio of students to each teacher rounded to the nearest tenth? a.
12.3:1
c.
160:13
b.
1:12.3
d.
13:160

Please select the best answer from the choices provided

A
B
C
D

The ratio of student to teacher is 12.3 to 1

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1