Given D = 5, E = 10 and F = 4, evaluate D• E/F
1/2
2
25/2

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?