Answer:
5x=5(20)=20 for Ed
2x=2(20)=40 for pete
together they had 140 cars
Step-by-step explanation:
5:2 is the ratio
5x-30=2x+30 tat when Ed gave Pete 30 cars
solve for x
5x-2x=30+30
3x=60
x=20
substitute for x: 5x=5(20)=20 for ED
2x=2(20)=40 for pete
Answer:
(8, 2 )
Step-by-step explanation:
Given the 2 equations
x + 4y = 16 → (1)
- x + 3y = - 2 → (2)
Adding the 2 equations term by term will eliminate the x- term
0 + 7y = 14
7y = 14 ( divide both sides by 7 )
y = 2
Substitute y = 2 into either of the 2 equations and solve for x
Substituting into (1)
x + 4(2) = 16
x + 8 = 16 ( subtract 8 from both sides )
x = 8
solution is (8, 2 )
Answer:
B
Step-by-step explanation:
seeing input/ output boxes= function
y is proportional to some constant (k)(constant of proportionality) times x
y=kx
y=0.9(x)
plug and chug...
4(.9)=3.6
6(.9)= 5.4
12(.9)= 10.8
Answer:
Where's the picture
Step-by-step explanation:
The picture...