Which statement explains how you could use coordinate geometry to prove the diagonals of a quadrilateral are perpendicular? Use the slope formula to prove the slopes of the diagonals are the same. Use the slope formula to prove the slopes of the diagonals are opposite reciprocals. Use the distance formula to prove the lengths of the diagonals are the same. Use the distance formula to prove the midpoints of the diagonals are the same.

4) Evaluate. Write your answer as a whole number or as a simplified fraction. $4^{3}\cdot 3^{2}=\square $

5 Cheddar cheese costs $\$ 4.25$ per pound. Which equation best represents y, the total cost of x pounds of cheddar cheese? Your answer

Simplify. $\frac {\frac {9}{2}-6}{1+\frac {7}{6}}$ $\square $

Find the partial sum. $\{ 38,31,24,17,\ldots \} ;S_{12}$

7. Find the coordinates of the intersection of the diagonals of the parallelogram with vertices $(-2,-4),(-4,4),(2,12)$ and $(4,4)$ 8. Three vertices of $\square ABCD$ are $A(1,5),B(1,1)$ and $D(2,2)$ Find the coordinates of the remaining vertex.

The GCF of $40c^{6}$ and $48c^{7}$ is $8c$ The missing exponent is __ The solution is $\square $

Find the solution(s) to each equation, or explain why there is no solution. $\sqrt {x+4}+7=5$

28. \( \left(\frac{112}{7}\right)^{\frac{1}{4}} \)

use the distributive property to remove the parentheses. $(2z^{4}-8z^{3}+3)4z^{5}$ Simplify your answer as much as possible.

$Area=4\cdot 69$ $=\square \cdot (\square -\square )$