Circle x is shown. line segment x y is a radius. line segment y z is a tangent that intersects the circle at point y. a line is drawn from point z to point x and goes through a point on the circle. the length of the line segment from point x to the point on the circle is 8, and the length of the line segment from the point on the circle to point z is 9. what must be the length of zy in order for zy to be tangent to circle x at point y?

Matilda and kathryn went on different road trips over spring break.the equation below represents the number of miles matilda drove in x hours.y = 60xthe table below shows the number of miles kathryn drove in x hours.time(in hours)distance(in miles)114228342456who drove at a greater speed? a. matilda drove at a greater speed.b. matilda and kathryn drove at the same speed.c. kathryn drove at a greater speed.d.there is not enough information to determine their speeds

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

Is the square root of 4 plus the square root of 16 rational?