The ratio of boys to girls in a school is $4$ to $5$. How many girls are in the school if a total of $945$ students are enrolled?

420 girls are in the school

Step-by-step explanation:

945 X 4

9

=420

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

read more on -

a: 1/6, j: 1/4

step-by-step explanation: you are welcome