Parallel lines always intersect, but perpendicular lines do not

Explain why algebra problems involve letters

Find 6 times as many as, 2plus 9

Which of the following statements best describes the effect of replacing the graph of y = f (x) with the graph of y = f (x) + 20? The graph of y = f (x) will shift left 20 units. The graph of y = f (x) will shift down 20 units.

What answer for not graph just solve it 5x + y = 2

Factorise 15x + 35y - 40 z

Carol put some green and red unit cubes in a box. The ratio of the number of red cubes is 2:1. She adds 12 more red cubes in the box and the ratio becomes 4:5.

A right triangle has a perimeter of 84. The ratio of each of the sides are 3:4:5. What are the lengths of each side of the triangle?

Given the function f (x) = - 3x3 + 9x2 - 2x + 3, what part of the function indicates that the left end starts at the top of the graph?

A square is cut into two congruent triangles by drawing the diagonal between two corners. If the area of each triangle is 162 cm, what is the length of the side of the square?

Suppose ΔXYZ is given, and you want to construct ΔABC so that the triangles are congruent. Which constructions would guarantee that ΔXYZ ≅ ΔABC? Check all that apply.