A study shows that 30% of college students get more than 8 hours of sleep. How large of a random sample is needed to be 99% sure that a point estimate will be within 15% of p?

Will give are given that xy is parallel to zw. if xz is a transversal that intercepts xy and zw, angle angle alternate interior angles. since xy is parallel to zw, we know that these angles are we also know that angle xvy and angle zvw are , and thus congruent. we can conclude that △xyv ~ △zwv using the similarity theorem.

Choose the more precise measurement. 26.4 cm or 8.39 cm

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)