Answer: She bought 68 books.
Step-by-step explanation:
Subtract 31 from 99 to find the difference! The difference tells us how many books she bought at the yard sale.
If we set the equation equal to 0, we can factor it to find its roots:
x² + 4x + 4 = 0
(x + 2)(x + 2) = 0
x = -2
This graph has one root, a double root, at -2. This means that a single point, which must be the vertex of the parabola, touches the x-axis at (-2, 0)
Answer:
\frac{A+c}{b}
Step-by-step explanation:
\frac{A}{b}+\frac{c}{b}
The correct answer is 60cm^2 because the area of a triangle is half base*height -> 30/2*40
No -4/3 can not be simplified