Solve the problem.Given the area A of a circle, the formula 
can be used to calculate the radius of the circle. Rewrite the formula by rationalizing the denominator.
A. r = 
B. r = 
C. r = ? 
D. r = 
Answer: B
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Write the statement in symbolic form and construct a truth table.Let p: The doctor prescribed medicine. q: The patient has recovered.The doctor did not prescribe medicine, but the patient recovered.
A. 
| T | T F | T |
| T | F F | F |
| F | T T | F |
| F | F T | F |
B.
| T | T F | T |
| T | F F | F |
| F | T T | T |
| F | F T | T |
C.
| T | T F | T |
| T | F F | F |
| F | T T | F |
| F | F T | F |
D.
| T | T F | F |
| T | F F | F |
| F | T T | T |
| F | F T | F |
Find the exact value of the expression without using a calculator.sin 95° cos 35° - cos 95° sin 35°
A. 
B. 
C. 
D. 
Perform the indicated operation. Write your result in a + bi form.(5 + 
) - (-10 + 
)
A. 15 + 2
i
B. 15 - 2
i
C. 15 - 2
D. 15 + 2
Use slope to determine whether the quadrilateral with the given vertices forms a parallelogram. If it is a parallelogram, determine whether it is also a rhombus.A(0, 3), B(3, 6), C( 5, -2), D(8, 1)
A. Yes, it is a parallelogram but it is not also a rhombus. B. No, it is not a parallelogram (nor is it a rhombus). C. Yes, it is a parallelogram and it is also a rhombus.