Answer:
(x+3)(x-3)
Step-by-step explanation:
rewrite "9" as 3^2
so it is x^2-3^2
You use the difference of squares: a^2-b^2=(a+b)(a-b)
apply it: (x+3)(x-3)
Answer:
g=22.5
Step-by-step explanation:
To solve, cross multiply
16/9=40/g
16*g=40*9
16g=360
Divide both sides by 16
16g/16=360/16
The 16s on the left will cancel, leaving us with
g=22.5
So, g=22.5, and the correct choice is the last one
Assuming Nicole = x, Nancy = y
Substitute that into
Answer : Nicole read 7.5 books.
Hope this helps. - M
Cos 57 it has to add up to 90
Answer:
.
Step-by-step explanation:
We have been given an expression and we are asked to simplify our given expression.
Using order of operations (PEMDAS) we will remove parenthesis first.
After removing parenthesis our expression will be,
After canceling out 1 with -1 we will get,
So our given expression simplifies to .
Let us write our expression in standard form. Since our expression is a polynomial and to write any polynomial in standard form, we write each term in order of degree, from highest to lowest, left to right.
Upon putting our polynomial into standard form we will get,
Therefore, after simplifying and putting our given expression in standard form we get our final expression as: .