I think that its B because its an entire class meaning there are boys and girls and the average will be more accurate than the other answers because those have either only boys or girls not both.
Answer:
12.6 !
Step-by-step explanation:
x + y = 80
x being how many miles he bikes
y being how many miles he jogs
substitute y with 17 because 3.4 (miles) x 5 (days) is 17 miles for those 5 days
so now its x + 17 = 80
subtract 17 from 80 and 17 from itself
x = 63. now divide 63 by 5 (days) to get 12.6 :)
Perpendicular means crossing so it would be a right angle. Therefore the 2 times will be
9:00 and 3:00
When the hour hand is at the 9 it will be perpendicular to the minute hand because they will be crossing paths if you extend the arms in both directions. The same with 3
Answer:
3t9p + 2t - 5p + 4
Step-by-step explanation: