Answer:
7/8
Step-by-step explanation:
To add the fractions, find the LCD and then combine.
8.
If you set up the problem as a ratio and cross multiply, you will find that you may buy 8 lemons for 60 cents.
Set up the equation like this:
2/15 to x/60.
Multiply 2 with 60, then proceed to divide by 15 in order to find x.
Hope this helps!
Answer:
Step-by-step explanation:
I know this is from Khan Academy, can you please try to copy the question so it will be easier to read?
Answer:
V = 160mph
Step-by-step explanation:
We need to start from the formula of speed: V=d/t
We have two travels, with and against the wind, both done in the same time.
Clearing t from the formula, we will have: t=d/V2
450miles/V-35mph (speed of the wind is subtracted)
702miles/V+35mph (speed of the wind is subtracted)
Now, we find V:
450miles/V-35mph = 702miles/V+35
450*V+35 = 702*V-35
450V+15,750 = 702V-24,570
702V-450V = 15,750 + 24,570
252V = 40,320
V = 40,320/252
V = 160mph