PEMDAS...parentheses, then exponents, then multiplication/division, finally addition/subtraction...
22+(3^2-4^2) inside the parentheses are exponents, so they are calculated first.
22+(9-16) now you complete the operations inside the parentheses
22+(-7) finally you do your addition/subtraction
22-7
15
Answer:
5
Step-by-step explanation:
6-6/7
using pemdas it's:
6/7= 0.857
6-0.857=5.143
5.143 to the nearest whole number is 5
Answer:
$16
Step-by-step explanation:
4 books would cost $6 and 5 tapes would be $10. Add them to get 16.
Step-by-step explanation: Let's begin by finding the
greatest common factor for the numbers 65 and 39.
I would make a factor tree and break up 65 and 39.
So 65 is 13 x 5 and 39 is 13 x 3.
Since the 13's match up, the greatest
common factor between 65 and 39 is 13.
For the variables, we use the smallest power on each of them.
So we use a^3 and b^4 to get 13a^3b^4 as our GCF.
