Suppose that the ratio of boys born to girls born is 120 to 100, what is the probability that out of 2500 babies born in Santa Clara, 1180 will be girls? Round your answer to four decimal places.
?
A. 0.9966
B. 0.2044
C. 0.4721
D. 0.0034
E. 0.2460
Answer: D
Mathematics
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by using the Chain Rule. Express your final answer in terms of t.w =x2 + xy + y2, x = e2t, y = t
A. 4e4t - 2te2t + 2t B. 4e4t + (2t + 1)e2t + 2t C. 2e4t + (2t + 1)e2t + 4t D. 2e4t + (2t + 1)e2t + 2t
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Find the directrices of the hyperbola.x2 - y2 = 25
A. y = ± 
B. x = ± 
C. y = ± 5
D. x = ± 
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Factor out the GCF.80x9y7 - 48x3y4 + 80x5y2
A. 16(5x9y7 - 3x3y4 + 5x5y2) B. 16x3y2(5x6y5 - 3y2 + 5x2) C. 16x3(5x6y7 - 3y4 + 5x2y2) D. No common factor
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Write the percent as a fraction or mixed number in lowest terms.60%
A. 6
B. 
C. 
D. 
Mathematics