Which statement verifies that quadrilateral wxyz is a
parallelogram?
a)the difference of the slope of adjacent sides is
b)the slopes of adjacent sides are opposite reciprocals.
c)the opposite sides have the same slope.
d)xy and yz have the same slope.

According to the normal model, what percent of receivers would you expect to gain fewer yards than 2 standard deviations below the mean number of yards

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Evaluate cos2θ for cosθ = square root of 3/2