Factor by grouping. If prime, so state.x3 - 7x2 + 3x - 21
A. (x + 7)(x2 + 3)
B. (x - 7)(x2 + 3)
C. (x - 7)(x2 + 7)
D. (x - 21)(x2 - 7x + 3)
Answer: B
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Determine all values that cause the expression to be undefined.
A. 0
B. -
C.
D. -
Find a formula for the nth term of the sequence.The sequence 0, 0, 2, 2, 0, 0, 2, 2, . . . (alternating 0's and 2's in pairs)
A. an = 1 - (-1)n(n-1) B. an = 1 + (-1)n(n-1) C. an = 1 + (-1)n(n+1) D. an = 1 + (-1)(n(n+1))/2
An experiment is conducted for which the sample space is Decide if the given probability assignment is possible for this experiment. If the assignment is not possible, tell why.
Fill in the blank(s) with the appropriate word(s).
Find the measure of the indicated angle. The figure is not drawn to scale.Find the measure of ?x.
A. 68° B. 186° C. 22° D. 38°