Hello, can someone help me for that?

Answer is 5/19

Step-by-step explanation:

First of all, we need to add all the boys up, so all the black, brown, blonde, and red-haired boys up because that would help us compare a specific amount of hair-colored boys with the rest of the other hair-colored boys. There are 15 red-haired boys, 12 blonde-haired boys, 5 brown-haired boys, and 25-black haired boys. Adding them would equal 57.

Next, we take the group of red-haired boys (15 kids), and we compare them with the whole boys in the yearbook (including themselves as well). This gives us 15/57 kids, but we need to put it into the simplest form, so if we divide by 3 (Both of them are multiples of 3) we get 5/19.

I hope this helps.

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: