Answer:
x=±sqrt (33)
Step-by-step explanation:
y=(x+2)(x-2)
29=x^2-4. x^2=33, x=±sqrt (33)
Answer:
-18
Step-by-step explanation:
you substitute all values of x for 2 and solve from there.
Answer:
There are 30 books in the shelf.
Step-by-step explanation:
To solve this problem we can use a rule of three in such a way that 12 paperback mysteries are related to 40% of the books in the shelf in the same proportion that "x" total books are related to 100% of the books in the shelf. So we have:
12 -> 40%
x -> 100%
40*x = 12*100
40*x = 1200
x = 1200/40
x = 30 books
There are 30 books in the shelf.
Answer:
The answer is C) 
.
Step-by-step explanation:
For a real number 
,
.
In other words, multiplying a square root by itself gets rid of the square root.
How does this rule apply here?
.
Similarly,
.
That is:
.
