ESTIMATE the following. SHOW which numbers you're using to estimate. a. 12.29 + 8.84 + 14.79 = ?

b. 484.297 - 117.558 = ?

Please let me know as soon as possible if you can.

(This is a grade 5 mathematical question by the way)

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?