What grade is this? I can get the answer of it but I forgot how
Answer:
first do:
60mph * 4 hours= 240mi
Let D = the distance the passenger train has to
travel to catch the freight train
Start a stopwatch when the passenger train leaves
Let t = the time on the stopwatch when they meet
Equation for freight train:
d-240=60t
Equation for passenger train:
d=100t
all together:
100t-240=60t
we can do 100t-60t because they both have (t)= 40t
40t=240 *now divide 240 by 40= 6
THEN do:
D= 100mph x 6= 600mi
They will meet 600 mi from the station
to check:
d-240=60t x 6
600-240= 360
60 x 6= 360
360=360
I think it is 42 because 2.75 + 4.25 is 7 x 6= 42
62 multiplied by 3 is 186
Add on 31 for the half hour
and you get 217
Answer:
1024
Step-by-step explanation:
n(10) =2^10
n(10) = 1024
