Step-by-step explanation:
13 + 22 = 35 degree change. 10-3 = 7. 35/7 = 5 degrees per hour.
X+3y=3
First add subtract the x
3y=-x+3
Then divide 3
Y=-1/3x+1
Answer:
Dan = 68
bobbi = 62
Step-by-step explanation:
Let Bobbi's height = b
Let Dan's height = d
the following equations can be determined from the question
b + d = 130 eqn 1
3b - d = 118 eqn 2
Multiply eqn 1 by 3
3b + 3d = 390 eqn 3
Substract eqn 2 from 3. this gives
4d = 272
d = 68
Substitute for d in eqn 1
b + 68 = 130
b = 62