Answer:
67.3
Step-by-step explanation:
If v = 15 km/h We have:
d1 = 30 km
d2 = 17 km
Since speed = distance/time follows time = distance/speed.
The total time of the entire trip is is the sum of the time of the first 30 km and the time of the remaining 17 km:
d1/v + d2/(v + 2) = 30/15 + 17/(15 + 2) = 2 + 1 = 3 hours
The answer is t=3hours
Answer: domain would be clearest
Step-by-step explanation: range is all about you
Multiply out the bracket:
(-1/2×-3y)+(-1/2×10)
-1/2×-3= 1.5 as the negatives cancel out
-1/2×10= -5
So the answer is 1.5y-5 or 3/2y-5 if you prefer a fraction
Answer:
5
Step-by-step explanation:
If we call A the group that has a tablet computer and B the group that has a smartphone. In this case we can apply a formula that tells us that:
# (AUB) = #A + #B - #AnB - NoANoB
We know all these values except the one that has neither A nor B.
# (AUB) = the number of respondents, that is 117.
#A = The number of people who have a tablet, that is 81.
#B = The number of people who have a smarphone, that is, 70.
#AnB = intersection of both groups, that is, they have both, that is 29.
Replacing:
117 = 81 + 70 - 29 - NoANoB
NoANoB = 81 + 70 - 29 - 117
NoANoB = 5
Which means that 5 people have neither a tablet nor a smartphone.
