Answer:
32
Step-by-step explanation:
Answer:
Maggie's age is 13 years
Step-by-step explanation:
Let
x ------> Maggie's brother age
y ------> Maggie's age
we know that
x+y=43 ------ > equation A
x=3y-9 ------> equation B
substitute equation B in equation A and solve for y
(3y-9)+y=43
4y=43+9
4y=52
y=13
therefore
Maggie's age is 13 years
Answer:
127
Step-by-step explanation:
The statement:
12(a + b) - a
Means that we need to evaluate a=5 and b=6 in the above equation and obtain the numerical result.
12(5+6) - 5
12(11) - 5
132 - 5 = 127
Answer:hdjdhebdbbf
Step-by-step explanation:
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Answer:
1) 3:15 hours.
2) 68 km per hour.
Step-by-step explanation:
Since a bus from Nantes at 3:50 p.m. and arrives at Tours at 7:05 p.m. after having traveled 221km, to calculate the journey time in hours and minutes and calculate the average speed of this bus, the following calculations must be performed:
1) 7:05 - 3:50 = 3:15
Thus, the duration of the trip was 3 hours and 15 minutes
2) 0:15 = 0.25
221 / 3.25 = X
68 = X
Thus, the average speed of the bus was 68 km per hour.
