If tanx = 1, and 0< x < 90 degrees, find cos(x/2)? a. b. c. d.

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds

In the diagram, gef and hef are congruent. what is the value of x