A die is rolled 20 times and the number of twos that come up is tallied. Find the probability of getting the given result.Exactly two twos
A. .116
B. .198
C. .159
D. .011
Answer: B
Mathematics
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Find the vertices and the foci of the given ellipse.
+ 
= 1
A. V: (-4, 0), (4, 0);
F:(- 
, 0), (
, 0)
B. V: (0, -9), (0, 9);
F: (0, -3) and (0, 3)
C. V: (0, -4), (0, 4);
F: (0, - 
), (0, 
)
D. V: (-16, 0), (16, 0)
F: (-4, 0) and (4, 0)
Mathematics
Write the given number in the situation as an integer.The team gained 65 yards in rushing during the first quarter.
A. -65 yards B. 65 yards
Mathematics
Solve the equation by finding an expression for the determinant on the left, and then solving using the appropriate method.
= 7
A. {7} B. {-3, 3} C. ? D. {3}
Mathematics
Find the inverse of the function.f(x) = -6x
A. f-1(x) = 6x
B. f-1(x) = - 
C. f-1(x) = - 
D. f-1(x) = 6 + x
Mathematics