Find the missing angle measure.
A. 85°
B. 52°
C. 42°
D. 128°
Answer: B
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Simplify by rationalizing the denominator. Write your answer in a + bi form.
A. 
- 
i
B. 18 + 1i
C. 
+ 
i
D. 
- 
i
Solve the equation.
= 
+ 4
A. -5 B. no solution C. 5 D. 5, -5
Provide an appropriate response. Which type of statistical graph best shows how different data items relate to each other?
A. bar B. line C. circle D. table
Solve using matrices.A chemist has prepared two acid solutions, one which is 6% acid by volume and the other which is 10% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of 
-acid solution?
A. 6%-solution: 3.76 cm3; 10%-solution: 46.24 cm3 B. 6%-solution: 46.24 cm3; 10%-solution: 3.76 cm3 C. 6%-solution: 25 cm3; 10%-solution: 25 cm3 D. 6%-solution: 31 cm3; 10%-solution: 19 cm3