When you set up equations like this, look at the units for help. They cancel out during division and multiplication like numbers to give desired quantities. Rates can be reversed if need be (3 meters/sec or 1/3 sec/meter).
time × (distance / time) = distance
See.. time/time = 1; leaving distance
Subtract the rate of the opposing walkway...
t × (3 m/s - 1 m/s) = d
2t = d
Answer is then A.
Answer:
y is directly proportional to 8
while x is inversily proportional to 8
Answer:
x = 1 and y = 11
Step-by-step explanation:
To start, let's substitute in y into the first equation. We will get 5x + 3 (3x + 8) = 38. Now, distribute the 3 in the 2nd term to get 5x + 9x + 24 = 38. Add like terms to get 14x + 24 = 38, and subtract 24 from both sides to get 14x = 14. Now, divide both sides by 14 to get x = 1. Plug this back in to get that y = 11.
Answer:
42 7/8
Step-by-step explanation:
7(6 1/8)
~Turn the 7 into a fraction and the other fraction into an improper one
7/1 * 49/8
~Multiply
343/8
~Simplify
42 7/8
Answer:
0
Step-by-step explanation:
f(x)=-(4+2)(4-4)
=-6(0)
=0
