3x-4y=10
-20-x+2y=10 then -30+2y=x now plug this in the other equation:
3(-30+2y)-4y=10
-90+6y-4y=10
2y=100
y=50
Answer:
18cm
if it takes 12cm to wrap 6 presents, it means it takes 2cm to wrap one present.
9 individual presents will take 2 wraps, so Dwayne needs 18cm of wrapping paper.
<span>B is the correct answer just took test </span>
Answer:
4^6 . 4^(-8) = 4^[6+(-8)] = 4^(6-8) = 4^(-2) = 1/4^2
Step-by-step explanation:
Hopes this helps
Answer:
Ozone
Step-by-step explanation: