Find the value of the constant ?k so that the function is a joint probability density function on D.
?

?
A.
B. ?
C. ?
D. ?
E. ?
Answer: D
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Use the coordinates of the indicated points to find the slope of the line.
A.
B. -3
C. 3
D. -
Translate the problem to a system of equations, then solve using Cramer's Rule.Two different gasohol mixtures are available. One contains 5% alcohol and the other 12% alcohol. How much of each should be mixed to obtain 500 gallons of gasohol containing 10% alcohol?
A. 208 gal 5%, 292 gal 12% B. 143 gal 5%, 357 gal 12% C. 357 gal 5%, 357 gal 12% D. 25 gal 5%, 60 gal 12%
Find the linear factorization of the polynomial and find all roots of the polynomial. f(x) = x3 + 8x2 + 25x + 200
A. f(x) = (x + 8)(x + 5i)(x - 5i), roots: -8, ± 5i B. f(x) = (x + 8i)(x + 5i)(x - 5i), roots: -8i, ± 5i C. f(x) = (x + 5i)(x + 8i)(x - 8i), roots: -5i, ± 8i D. f(x) = (x + 5)(x + 8i)(x - 8i), roots: -5, ± 8i
Combine like terms.14x - 6y + 13 - 2x - 12 - 2y
A. 12x - 4y + 1 B. -12x - 8y + 1 C. -12x - 4y + 1 D. 12x - 8y + 1