Estimate the sum or difference. use the benchmarks, 0, 1/2, and 1.

23/40-11/30

a 0
b 1
c 1/2

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample