Write the expression in simplest form. If a radical appears in the denominator, rationalize the denominator.
A. 3xy
B. 5xy
C. 5xy
D. 5xy
Answer: B
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Provide an appropriate response.Can the sample variance ever be a negative number? If so, for what types of data? If not, why not? Can the sample variance ever be zero? If so, for what types of data? If not, why not? Explain your reasoning.
What will be an ideal response?
Solve the problem using inductive reasoning.Choose a value of n greater than 1. Find Sn and multiply it by 3. Find Tn and multiply it by 2. Subtract the smaller number from the larger number. In other words calculate 3Sn - 2Tn. Repeat this for various values of n. What kind of figurate numbers do you get?
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Find the product: (2x - 5)(3x - 5)
What will be an ideal response?
Differentiate.y = (x + 1)2(x2 + 1)-3
A. 
= -2(x + 1)(x2 + 1)-4(2x2 - 3x - 1)
B. 
= 2(x + 1)(x2 + 1)-4(2x2 - 3x - 1)
C. 
= -2(x + 1)(x2 + 1)-4(2x2 + 3x - 1)
D. 
= 2(x + 1)(x2 + 1)-4(2x2 + 3x - 1)