The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).2x + 3y = 6
A. r(2 sin ? + 3 cos ?) = 6
B. 2 cos ? + 3 sin ? = 6r
C. r(2 cos ? + 3 sin ?) = 6
D. 2 sin ? + 3 cos ? = 6r
Answer: C
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Provide an appropriate response.Find the standard deviation for the scores: 76 59 97 96 88
A. 15.9 B. 7.96 C. 83.2 D. 14.25
Answer the following statement(s) true (T) or false (F)
1. An “exercise” can be solved by simply applying a routine procedure, but a “problem” is not routine and requires a well-thought-out plan of attack. 2. If there are infinitely many numbers involved in a problem, the Guess and Test problem-solving strategy is indicated. 3. If 12 coins are arranged in the shape of an equilateral triangle, then there are 5 coins along each side. 4. If the fourth phase of problem solving,“Looking Back,” we should look for other ways to solve the problem even if we got the ‘right’ answer. 5. When you are asked to make a generalization, you should use the Guess and Test problem-solving strategy.
Suppose ABC is a right triangle with sides of lengths a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the value of the indicated trigonometric function of the given angle. Rationalize the denominator if applicable.Find cot A when a = 5 and c = 6.
A. 
B. 
C. 
D. 
How are the diagonals of any parallelogram related?
A. congruent B. perpendicular C. bisect each other D. None of These