Answer:
2.4 hours
Step-by-step explanation:
David's time = 6 hours
Anthony's time = 4 hours
the combined time is given by the following formula
1/ (david's time) + 1/(anthony's time) = 1/total time
1/6 + 1/4 = 1/Total
4/24 + 6/24 = 1/Total
10/24 = 1/ total (taking reciprocal of both sides)
24/10 = total
total time = 24/10 = 2.4 hours
[[x]] means that the integer should be rounded down to the greatest integer that is of the same value as x or is lower than x.
Answer:
0.5
Step-by-step explanation:
the first significant figure is the non zero
I hope this helps you
1=?.7
?=1/7
