Answer:
(Roses Ratio) x (The plot of land flowers are planted on Ratio) = (Space the roses occupy), so:
Answer: Wendy spent 4 hours on the train
Step-by-step explanation:
Let x represent the time that Wendy spent on the bus.
Let y represent the time that Wendy spent on the train.
Distance = speed × time
The bus averaged 40 mi/h. This means that distance travelled by the bus is 40x
The train averaged 60 mi/h. This means that distance travelled by the bus is 60y
Wendy took a trip from devenport to ohama, a distance of 300mi. This means that
40x + 60y = 300- - - - - - - - - - - - -1
The entire trip took 5 1/2(5.5) h. This means that
x + y = 5.5
Substituting x = 5.5 - y into equation 1, it becomes
40(5.5 - y) + 60y = 300
220 - 40y + 60y = 300
- 40y + 60y = 300 - 220
20y = 80
y = 80/20
y = 4
x = 5.5 - y = 5.5 - 4
x = 1.5
Answer:
Pr(tablet given smartphone) = 18%
Step-by-step explanation:
Let:
probability that the student has a smartphone = Pr(smart phone)
Pr(smart phone) =0.71
the probability that the student has a tablet = Pr(tablet)
Pr(tablet) = 0.28
the probability the student has both = Pr(both)
Pr(both) = 0.13
the probability a student has a tablet given they have a smartphone = Pr(tablet given smartphone)
Pr(tablet given smartphone) = Pr(tablet & smartphone)/Pr(smart phone)
Pr(tablet given smartphone) = 0.13/0.71
Pr(tablet given smartphone) = 0.183 = 18.3%
Pr(tablet given smartphone) = 18%
Step-by-step explanation:
2x + 4 ≤ 12
Subtract 4 from both sides.
2x ≤ 8
Divide both sides by 2.
x ≤ 4
3x + x + 5 + Y - 10 = 180
3x = Y - 10
3x + 10 = Y
3x + x + 5 + 3x = 180
7x + 5 = 180
7x = 175
x = 25
3(25) = Y - 10
75 = Y - 10
85 = y
X = 25 Y = 85
