Find the numerical value of the expression for 
and 
5x2 + 8x
A. a) 52 b) 234
B. a) 112 b) 1764
C. a) 72 b) 324
D. a) 48 b) 1476
Answer: B
Mathematics
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Solve using matrices. x + y + z = 2 x - y + 5z = 163x + y + z = 8
A. (-3, 2, 3) B. (2, -3, 3) C. (3, -3, 2) D. (2, 3, -3)
Mathematics
Find the probability.In a certain college, 33% of the physics majors are ethnic minorities. A random sample of 10 physics majors is chosen. Find the probability that exactly 2 are ethnic minorities. Round to the nearest ten-thousandth.
A. 0.1929 B. 0.0028 C. 0.1990 D. 0.2156
Mathematics
Write a polynomial equation in standard form with the given solutions.
, - 
A. 15x2 - 18x + 17 = 0
B. 15x2 + 17x + 18 = 0
C. 15x2 + 17x - 
= 0
D. 15x2 + 17x - 18 = 0
Mathematics
Solve the equation.31 = 3x + 4
A. x = 28 B. x = 24 C. x = 6 D. x = 9
Mathematics