When a natural number is multiplied by itself. The result is called a perfect square. Since 1x1 = 1, 2x2=4, 3x3=9 and so on, then the numbers 1,4,9 etc are perfect squares. Using this knowledge work out which year in the 18th century (the years 1701 through to 1800) was a perfect square?

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

286 divided by 457.6 what is the quotient?