3:
in biology class, the girl to boy ratio is 3 to 10. if there are a total of 52 students, how many boys are there?

40 boys

Step-by-step explanation:

the ratio at first is 3 girls to 10 boys so you can use multiplication and addition to figure this out.

3 times 4 equals 12

10 x 4 = 40

whatever you multiply on one ratio you do to the other ratio. 40 + 12 = 52

Now the question is asking how many BOYS are there.

there are 40 boys.

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation: