F (x) = x2 - 8x - 9 what is the vertex

F (x) = -x^2-10x-2 given the polynomial function is F (-9)

Tara's science project was graded based on creativity, accuracy, and effort. If she received a 9.4 for each of the three criteria, what was her total score? a. 28.2 b. 27.7 c. 27.2 d. 9.7

Does Every positive real number have both a positive and negative cube root?

Explain which division facts were the easiest for you to learn

A sand volleyball court has an area of 162 square meters and a perimeter of 54 meters. What are the dimensions of the volleyball court?

A basket of beads contains eight red beads six yellow beads and six green beads. A bead will be drawn from the basket and replaced 150 times. What is a reasonable prediction for the number of times a green bead is drawn?

How many different 10-letter code words can be constructed from the English alphabet?

The circumference of a circle with a radius of 2 meters is approximate by the perimeter of an inscribed polygon with 10 sides. Which expression gives the described approximation of the circumference?

2x^2-16+22=0 (quadratics)

In ΔABC, AB = 20 cm, AC = 15 cm. The length of the altitude AN is 12 cm. Prove that ΔABC is a right triangle.