A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 20 is about 4.472. Thus, the square root of 20 is not an integer, and therefore 20 is not a square number.
66/55 in simplest form is 6/5. Because...
66÷ 11= 6
55÷ 11= 5
Pablo spends 15 hours on writing tasks
answer: twice as much=2 times this number
then twice as much= 7.5 times 2
7.5 times 2= 15hrs
Answer:
A. 40. B.12
Step-by-step explanation:
40/34=.85
80*.15=12
