It’s 20+40=60
24+37=60 rounding to the nearest 10 is 60
You can multiply either the top or bottom equation by -1 so lets say you apply it to the bottom equation it’ll look like this:
-9x + 9y = 18
6x - 9y = 12
then the +9y and -9y will cancel out
-9x = 18
6x =12
then you add the two equations together
-3x = 30
divide both sides by -3
x = -10
Answer:
X=-1
Y=-9
Step-by-step explanation:
x^2+2x-8
x^2+2x +1 =8+1
(x+1)-9
Answer:
$391
Step-by-step explanation:
276 ÷ 12 = 23
$23 = 1 hour
23 × 17=391
The answer is 64.4 because you multiply 92 times 0.7 and get 64.4
