Answer:
9
Step-by-step explanation:
Given,
Side of square = 3 feet.
To find : Area of square = ?
Formula : -
Area of square = ( side )²
Area of square
= 3²
= 3 x 3
= 9 feet²
Therefore,
The unit of it's area will be 9 feet².
Since t is from 0 to 1 second, the time length is 1 second total.
replace t in the given equation with 1 and solve for x:
x = 4 cos(PI x 1 + PI/4)
X = 4cos(PI + PI/4)
x = 4cos(5PI/4)
x = 4(-cos(PI/4))
x = -2√2
Answer:

Step-by-step explanation:
Let
x------> the number of books
we know that
The linear equation that represent this situation is equal to

solve for x
Divide by
both sides


Answer:
AC = 13 units
Step-by-step explanation:
A(0 , -4) ; c(5 , 8)
Distance = 
![= \sqrt{(5-0)^{2}+(8-[-4] )^{2}} \\\\\\= \sqrt{5^{2}+(8+4)^{2}} \\\\\\=\sqrt{5^{2}+12^{2}}\\\\= \sqrt{25 + 144}\\\\= \sqrt{169} = 13 \\\\\\](https://tex.z-dn.net/?f=%3D%20%5Csqrt%7B%285-0%29%5E%7B2%7D%2B%288-%5B-4%5D%20%29%5E%7B2%7D%7D%20%5C%5C%5C%5C%5C%5C%3D%20%5Csqrt%7B5%5E%7B2%7D%2B%288%2B4%29%5E%7B2%7D%7D%20%5C%5C%5C%5C%5C%5C%3D%5Csqrt%7B5%5E%7B2%7D%2B12%5E%7B2%7D%7D%5C%5C%5C%5C%3D%20%5Csqrt%7B25%20%2B%20144%7D%5C%5C%5C%5C%3D%20%5Csqrt%7B169%7D%20%3D%2013%20%20%20%5C%5C%5C%5C%5C%5C)