98,932,599.9389 to the nearest tenth, hundredth.​

Can someone me with the property questions for 12 13 and 14 plz

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.

The product of sin 30 degrees and sin 60 degrees is same as the product of