The relative aperture, or f-stop, of 23.5 mm diameter lens is directly proportional to the focal length of the lon. If 260-mm focal length an stop of 6.3, find the f-stop of 23.5mm diameter lens with a focal length of 90mm.

Abaker makes 186 cookies. some are chocolate chip and some are oatmeal raisin, and both kinds are made with and without nuts, as shown in the table above. because they are more popular, the baker made 2/3 of the cookies chocolate chip. if a chocolate chip cookie is chosen at random, what is the probability that it will have nuts? a) 21/93 b) 21/62 c) 41/93 d) 21/41

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)