Answer:
(x+4)(x-4)
Step-by-step explanation:
Here is a simple help for when you can take a square root of both terms:
(x+(squareroot)) x (x-(squareroot))
x times x = x^2
4 x -4 = -16
This is just a learned skill, most often from Alg 2, Alg 2 w/ trig, and Precal!
Hope this helps!
Answer:
12 months
Step-by-step explanation:
Given data:
Before joining club 6 books read
3 books every month
total books read 42
books read after joining the club = 42 - 6
books read after joining the club = 36
Months she has in book club = 36/3
Months she has in book club = 12 months
Answer:
The total number of balls in the pyramid will be 55.
Step-by-step explanation:
Cannonballs are stacked In a pyramid shape with a base of 5 cannonballs on a side.
Therefore, at the base, the number of balls is 5².
In the layer above the base layer, there are 4 balls on each side.
So, in the layer above the base layer, the number of balls is 4².
Similarly, in the next levels, the number of balls will be 3², 2² and 1.
Therefore, the total number of balls in the pyramid will be (5² + 4² + 3² + 2² + 1) = 55. (Answer)
Last answer for the first question and in not sure about the second one
Multiply length time width, and make sure you square your answer!
