Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 65 and standard deviation ? = 10.Approximately what percentage of the test scores had standardized values between -2 and 2?
A. 95% B. 68% C. 99% D. 50% E. none of these
Mathematics
Find the missing angle in the triangle.Two angles are 45° and 108°.
A. 27° B. 153° C. 63° D. 207°
Mathematics
Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.13 cm = ____ inches
A. 5.1 in. B. 3.9 in. C. 33.0 in. D. 1.3 in.
Mathematics
Solve the equation and check your proposed solution.z + 3 = 4
A. -1 B. 1 C. -7 D. 7
Mathematics