Your question asks for an expression, so you would expect an answer in the form of an equation containing variables. This is because you have only 2 independent equations with 3 unknowns. That makes the system unsolvable.
Suppose v₁ is the mountaineer's velocity during the 1,000-foot trail. Then, v₂ is his speed for the 5,000-foot trail. The equation relating these two variables is:
v₂ = 2v₁ - 10 ---> equation 1
Then, you find the equation for the total number of hours he climbed. That would be the distance divided by their respective speed.
t = 1000/v₁ + 5000/v₂ ----> equation 2
Substituting equation 1 to equation 2,
t = 1000/v₁ + 5000/(2v₁ - 10)
t = 1000/v₁ + 5000/2(v₁-5)
t = 1,000/v₁ + 2,500/(v₁-5)
Answer:
3x-3=18
Step-by-step explanation:
3(x-3)=18
3x-9=18
x=9
3.34=3x-1
3x=35
x=35/3
Susie bought 434 pounds, and ate 58pounds
so, 434-58= 376
> 376pounds left
I think its 140140 divided by 66 ....i think so
Answer:
its easy just do rise over run. if u know what that is