Point x is located at (2, −6), and point z is located at (0, 5). find the y value for the point y that is located one over five the distance from point x to point z.

−3.6
−3.8
−4
−4.2

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.