Solve the problem.A student is told to work any 7 out of 10 questions on an exam. In how many different ways can he complete the exam? (The correctness of his answers has no bearing.)
A. 10,000,000
B. 120
C. 720
D. 21
Answer: B
Mathematics
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Provide an appropriate response.Find an equation for the tangent to the curve y = 
at the point (1, 12).
A. y = -8x + 20 B. y = 8x + 4 C. y = -4x + 16 D. y = -8
Mathematics
Write the expression in the standard form a + bi.(8 + 9i)2
A. 64 + 144i + 81i2 B. 145 + 144i C. -17 D. -17 + 144i
Mathematics
Find the first term, the common difference, and give a recursive formula for the arithmetic sequence.8th term is 28; 13th term is -2
A. a1 = 76, d = -6, an = an-1 - 6 B. a1 = 70, d = -6, an = an-1 - 6 C. a1 = 76, d = 6, an = an-1 + 6 D. a1 = 70, d = 6, an = an-1 + 6
Mathematics
Solve by using the quadratic formula.2x2 + 12x + 3 = 0
A. 
B. 
C. 
D. 
Mathematics