Perform the calculation.90° - 19°39'
A. 71°39'
B. 70°39'
C. 71°21'
D. 70°21'
Answer: D
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Provide an appropriate response.Show that the midpoint of the hypotenuse of a right triangle is equidistant from all three vertices. [Hint: See the figure below. Show that 
= 
.] 
What will be an ideal response?
Write an expression in terms of the given variable(s) that represents the indicated quantity.The amount of money in cents in a jar containing n nickels and some dimes and some quarters if there are 3 times as many dimes as nickels and twice as many quarters as dimes.
A. 85x cents B. 175x cents C. 110x cents D. 185x cents
The lengths of the sides of a triangle are given. Determine if the triangle is a right triangle. If it is, identify the hypotenuse.8, 16, 20
A. right triangle; 20 B. right triangle; 16 C. right triangle; 8 D. not a right triangle
Solve the problem.The average annual growth rate of forest pines in inches satisfies the inequality 
What range of growth corresponds to this inequality?
A. [0.74, 9.18] B. [0.74, 18.36] C. [4.22, 4.96] D. [0.37, 9.18]