Answer:
Step 1 : Multiple both sides by 2
3x + 2y = 1
4x - 2y = 20
Step 2 : Eliminate 1 variable by adding the equations
7x = 21
Step 3 : Divide both sides by 7 to solve for x
x = 3
Step 4: Substitute the value of x into 3x + 2y = 1
3(3) + 2y = 1
Step 5: Solve for y
2y = 1 - 9
2y = -8
*divide by 2
y = - 4
Solution:
(x,y) = (3, -4)
Answer:
Step-by-step explanation:
I'm not 100% sure what this is asking, but this is how many miles per hour and also the expression for miles in h hours. You can do whatever you want with it.
367 in 5 hrs
73.4 in 1 hr
73.4h
Answer:
B. 1.093
Step-by-step explanation:
I calculated it logically
X+4+3x =
4x+4 (you sum the like terms )
Add positive 28 to get the sum 0