15. 
Step 1: Distribute the subtraction sign to all the numbers in the second set of parentheses...


Step 2: Combine like terms (
's go with
's)




Step 3: Combine like terms (
's go with
's)




Step 4: Combine like terms (normal numbers go with normal numbers)

1 + 2
3

You were correct!
16. 
I don't really know how to explain this one but I got: (7m-6n)(7m-6n)
I believe the correct answer from the choices listed above is the third option. The polynomial expression that represents the area of the outermost square tile would be <span>x^2 + 6x + 9. The area of a square is calculated by the square of its side and the side of this square is given as x+3.
A = (x+3)^2 = x^2+6x+9</span>
Answer: 2
Step-by-step explanation:
Find the prime factors of each term
Answer: 5 hours and 15 mins
Step-by-step explanation: 45 mins x 7 = 5 hours and 15 mins. I checked so it should be correct.
hour and 30 mins.So I multiplied 1 hr 30 x 3 which gave me 4 hr 30 then added 45 mins, then I got 5 hr 15 min.
So in conclusion the answer is 5 hours and 15 mins.
Thank You
Answer:
The correct answers are a, c and d
Step-by-step explanation: