Answer:
(x + 9)(x4)
Step-by-step explanation:

So, the possible side
lengths of the quilt are (x + 9) and (x + 4) units.
Answer: The pack of 20.
Step-by-step explanation:
It is because a pack of 20 sells for 2.50 for each pencil, and the pack of 12 sells for 2.51 per pencil, so that means the pack of 20 is cheaper.
<span>In 10 years, you will have $31,049.30</span>
A right triangle contains a right angle, so it must have two sides that are perpendicular. If the slopes of two sides can be shown to be negative reciprocals of each other, then it can be concluded that a right angle is formed. If a triangle contains a right angle, then it is a right triangle.