J = jeans
T = t-shirts
You: 5j + 10t = 140
Friend: 3j + 5t = 79
To use elimination in this problem, multiply the second equation by -2 so that 10t and 5t can cancel out:
5j + 10t = 140
-6j - 10t = -158
We are left with -j = -18 or j = 18
Substitute 18 into any equation. I'll use the first equation:
5(18) + 10t = 140
90 + 10t = 140
10t = 50
t = 5
Answer:
x=6
Step-by-step explanation:
1/2x+17=20
lets get rid of the 17 first by subtracting
1/2x=3
we have 1/2 x so to get a full x multiply both sides by 2
x=6
Answer:
48
Step-by-step explanation:
4/6 = 2/3
2/3 times 72 = 48
Try this solution (based on 3 steps: equation of the line; points in this line; equation of the plane).
Answer:
0.27659574
Step-by-step explanation:
