W = 17/13.
I hope this helps. I'm pretty sure I got it wrong, but just let me know.
Answer:
B. x ≤ 2.
Step-by-step explanation:
56 - 10x ≥ 20 + 8x
-18x ≥ -36
x ≤ -36/-18 = 2. ( Note that the inequality sign flips because we are dividing by a negative value).
Answer:
-2√10, 2√10
Step-by-step explanation:
Graphing x²-40 would be the fastest way to go. However, because this is not factorable, you have to use the quadratic formula to solve it if you want to do it algebraically.
Answer:
20
Step-by-step explanation:
Answer:
Faster jet = 650
Slower jet = 650 - 89 = 561
Step-by-step explanation:
Given
total distance apart = 4844
t = 4 hours
r1 = r
r2 = r - 89
Equations
d = r * t
r*t + (r - 89)*t = 4844
Solution
r*4 + (r - 89)*4 = 4844
4r + 4r - 356 = 4844 Combine the left
8r - 356 = 4844 Add 356 to both sides
8r = 4844 + 356
8r = 5200 Divide both sides by 8
r = 5200/8
r = 650