2x + 3y = 630
x + y = 245 then you want to get rid of x so in the second equation × by -2 and get -2x -2y =-490 subtract this equation from the first to get y=$140 substitute 140 in for y and get x= $105 and 2x=210 and 3y=420 210 +420=630
Answer:
42+30=72
7+5=12
72-12=60
Blank=60
Step-by-step explanation:
9 is 12% of 75 check it 9* 100 = 900 / 75 = 12
Step-by-step explanation:
given
900m = 2.700
m = 2.700 / 900
m = 0.003
Hope it will help :)
Answer:
-2.5 degrees
Step-by-step explanation:
The temperature decreased 18.5 degrees F in 7.4 hours.
-
-18.5/7.4 = -2.5 degrees F
The average change in temperature over the course of 7.4 hours is -2.5 degrees F.
Your welcome!
Kayden Kohl
8th Grade
