Solve the problem, rounding the answer as appropriate. Assume that "pure dominant" describes one who has two dominant genes for a given trait; "pure recessive" describes one who has two recessive genes for a given trait; and "hybrid" describes one who has one of each.Two hybrids produce a litter of four offspring. What is the probability that exactly one is pure recessive?
A. .133
B. .211
C. .25
D. .422
Answer: D
Mathematics
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Find the missing angle or angles.
A. 66°, 66° B. 33°, 33° C. 48°, 84° D. 156°, 156°
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Find the first term and the common ratio of the geometric sequence.
, 
, 
, 
, 
, . . .
A. a1 = 
, r = 
B. a1 = 
, r = 6
C. a1 = 
, r = 
D. a1 = 
, r = 2
Mathematics
Solve the problem.If f(?) = sin ? and f(a) = - 
, find the exact value of f(-a).
A. 
B. - 
C. - 
D. 
Mathematics
Write an equation in standard form for a line passing through the pair of points.(4, -2) and (8, -9)
A. -7x - 4y = -20 B. -6x - 17y = -201 C. 7x - 4y = -20 D. 6x + 17y = -201
Mathematics