The equation x squared plus y squared =169 defines a circle with center at the origin and radius 13. the line y=x+7 passes through the circle. using the substitution method, find the point(s) at which the circle and the line intersect

Given: △abc, ab=15, bd=9 ad ⊥ bc , m∠c=30°. find: the perimeter of the triangle.

What is the y intercept of f(x)=(1/2)^x?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.