The distribution of the math SAT test scores at a local college is approximately Normal (490, 100) .
(a) What is the percentage of the scores is below 450?
(b) What is the percentage of the scores is above 600?
(a) 0.3446
(b) 0.1357
Mathematics
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Find the center of mass of a thin plate of constant density covering the given region.The region between the x-axis and the curve y = 4csc2 x, 
? x ? 
A. 
= 
, 
= 6
B. 
= 
, 
= 4
C. 
= 
, 
= 
D. 
= 
, 
= 
Mathematics
Solve the problem.Each employee at Fandango Fashions is given an across-the-board raise of $5000. Write a function that transforms each old salary x into a new salary N(x).
A. N(x) = x + 5000 B. N(x) = 5000 - x C. N(x) = 5x + 1000 D. N(x) = 5000x
Mathematics
Find the indicated matrix.Let B = [-1 6 4 -3]. Find -2B.
A. [-2 12 8 -6] B. [-3 4 2 -5] C. [2 6 4 -3] D. [2 -12 -8 6]
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics