Twelve of the 30 students in the class were boys if each students name is placed in the hat and one name is drawn what is the probability that it will be the name of a girl

I think 3/5??? Im really stupid though. I have a 58% in my math grade

Step-by-step explanation:

12/30

6/15

2/5

5/5-2/5=3/5?

chicken nugget stir fry

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4