To calculate elapsed time:
Count on in minutes from the earlier time to the nearest hour.
Count on in hours to the hour nearest to the later time.
Count in minutes to reach the later time.
The gap from 9:25 PM to 10 PM is 35 min. The gap from 6 AM to 6:15 AM is 15 min. So far, that accounts for 35+15 = 50 min. The gap from 10 PM to midnight is 2 hours (10+2 = 12). Then the gap from midnight to 6 AM is 6 hours. So we have 2+6 = 8 hours. Add on the minute portion we computed to get 8 hours, 50 minutes.
Answer: 8 hours, 50 minutes
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DONT CLICK ON THAT LINK PLEASE! But the answer is x= -5
Answer:
y = 4
x= 7
Step-by-step explanation:
First you would rearrange the first equation x-7y=-21 and make x the subject:
x= -21 +7y
Then substitute x into the 2nd equation to find y:
13x - 7y= 63
13(-21+7y) - 7y = 63
-273 + 91y -7y = 63
-273 + 84y=63
84y = 63 + 273
84y = 336
y = 4
Once you have y you can substitute this into any of the original equations to find x, for example:
x - 7y = -21
x - 7(4) = -21
x - 28 = -21
x = -21 +28
x= 7
Answer:
37
Step-by-step explanation:
37+38+39
Answer:
and 4
Step-by-step explanation:
To simplify like surds, add/ subtract the coefficients.
(a)
(6 - 5)
= (1)
=
(b)
( 1 + 3)
= (4)
= 4