4 2/3 divided by 2 3/6 divided with a calculator as a decimal would be 1.86666666667
multiply the number of ounces by the price per ounce
Blue jelly beans cost 0.28 per ounce and there are 4 ounces
4 * 0.28 = 1.12
red jelly beans cost 0.55 per ounce and there is 3 ounces
3 *0.55 = 1.65
now add the totals: 1.12 +1.65 = 2.77
this is more than the total they want of 2.20
so it is not reasonable.
Answer:
C
Step-by-step explanation:
The commutative property of addition reorganizes parts of an equation without changing the answer. C includes the same numbers (-21, +7) without changing the answer (-14)
Answer:
- walking: 1.5 mph
- jogging: 3 mph
Step-by-step explanation:
Let w represent Felipe's walking speed in miles per hour. Then his total travel time is ...
time = distance/speed
3 = 3/w +3/(w+1.5) . . . . . total time is the sum of walking and jogging times
1 = 1/w +1/(w +1.5) . . . . . divide by 3
w(w +1.5) = (w+1.5) +w . . . . multiply by w(w+1.5)
w^2 -0.5w -1.5 = 0 . . . . . . subtract 2w+1.5
(w -1.5)(w +1) = 0 . . . . . . . factor
The values of w that make this equation true are w = 1.5 and w = -1. Only the value 1.5 makes any sense in this scenario. Felipe's jogging speed is then 1.5+1.5 = 3 mph.
Felipe walks at 1.5 mph and jogs at 3 mph.
