X=number of boys.
y=number of girls.
we suggest this system of equation
x/y=9/7
x=y+116
We solve this system of equation by substitution method.
(y+116)/y=9/7
7(y+116)=9y
7y+812=9y
9y-7y=812
2y=812
y=812/2=406
x=y+116
x=406+116=522
answer: At the school there are 522 boys and 406 girls.
to chek.
522/406=1.2857...
9/7=1.2857...
The number of boys (522) is equal to 406+116=522.
Answer:
1/2
Step-by-step explanation:
Probability = Favorable outcomes / Total number of outcomes
=> Purple + Blue / Total
=> 6 + 4 / 20 (Because there are 6 purple and 4 blue and 10 green)
=> 10 / 20
=> 1/2
If this helped, Please mark me as the brainliest!
Thank you!
Subtract 10 from both sides :
-3y + 10 - 10 = -14 -10
3y = -24
divide both sides with 3 :
y = -8
The answer should be y=0.25x + 3.35
