Question 1/10 points) Which expression is equivalent to x2 - 4x – 45?
0
(x– 9) (x - 5)
Oь
(x + 9) (x + 5)
Оe
(x + 9) (x - 5)
Od
(x - 9) (x + 5)
Can somebody please help me with this

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Asalsa recipe uses green pepper, onion, and tomato in the extended ratio 3: 5: 7. how many cups of tomato are needed to make 105 cups of salsa? a. 7 b. 21 c. 35 d. 49