Use the formula for the general term (the nth term) of a geometric sequence to find the indicated term of the sequence with the given first term, a1, and common ratio, r.Find a4 when a1 = 8, r = -5.
A. 1000
B. -1000
C. 5000
D. -125
Answer: B
Mathematics
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Factor the polynomial completely. If the polynomial is prime, so state.-3x2 + 4x + 15
A. -(3x - 5)(x + 3) B. -(3x + 5)(x - 3) C. -(3x - 3)(x + 5) D. prime
Mathematics
Find the value of the probability of the standard normal variable Z corresponding to the shaded area under the standard normal curve. Round your answer to four decimal places.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Graph the equation using the slope and y-intercept.4x + 2y = 8
A. 
B. 
C. 
D. 
Mathematics
The graph of a function f is given. Use the graph to answer the question.What are the x-intercepts?
A. -3, 3.5 B. -3, 3.5, 5 C. -3 D. -5, -3, 3.5, 5
Mathematics