There are 25 students on the school bus, 5 girls and 20 boys. What is the ratio
of girls to boys on the school bus?
A. 1:4
B. 5:2
c. 4:1

A) 1:4

Step-by-step explanation:

Identify what you know:

1) There are a total of 25 students on the school bus.

2) 5 of the students are girls.

3) 20 of the students are boys.

For every 1 girl, there are 4 boys! We can test this:

20/5 = 4

1:4

step-by-step explanation:

i need to answer questions so i dont know but i think its the first one because it goes up but a consent rate

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15