Answer:
60miles
Step-by-step explanation:
if they drove x miles in the city and y miles on the highway then you know that
x + y = 280
x/12 + y/20 = 16
x + 12y/20 = 16*12 = 192
8y/20 = 88
y = 220
x = 280-y = 280-220 = 60
For the answer to the question above, we'll have to use the formula for velocity which is v =<u> d
</u> t and d = vt
Since the total distance is given, therefore we can get the time and it will look like this.
220t + 250t = 1880
<u>470t</u> = <u>1880
</u>470 470
the problem indicates that the train runs 250kph
Let's substitute:
d = 250(4)
the distance traveled by Lian is 1000km
<u>
</u>
Answer:
They are 3, 11 and 55.
Step-by-step explanation:
x +y + z = 69
y = x - 8
z = 5x
Substitute z = 5x in the first equation:
x + y + 5x = 69
6x + y = 69.........(1)
From the second equation
-x + y = -8.........(2)
Subtract equations (1) - (2):
7x = 77
x = 11
So z = 5x = 5*11 = 55 and
y = x - 8 = 11 - 8 = 3..
Answer:
Nicole is 13 years old because x + 5 = 18
Step-by-step explanation:
Answer:
idrk i think it is 16x²
Step-by-step explanation: