In a certain college, 33% of the physics majors belong to ethnic minorities. Find the probability of the event from a random sample of 10 students who are physics majors.Exactly 4 do not belong to an ethnic minority.
A. 0.2564
B. 0.2253
C. 0.0467
D. 0.0547
Answer: D
Mathematics
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Two sides and an angle are given. First, determine whether the given information results in no triangle, one triangle, or two triangles. Solve each resulting triangle.b = 2, c = 5, B = 65°
A. one triangle; C = 34°, A = 81°, a = 11 B. one triangle; C = 32°, A = 83°, a = 9 C. no triangle D. one triangle; B = 33°, A = 82°, a = 7
Mathematics
Divide and simplify.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression.-7.6(4r + 7) + 8.8(7r + 3)
A. 31.2r + 7 B. 31.2r - 26.8 C. -83.6r D. -3.6r - 0.6
Mathematics
Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.(2-5) ? (22)
A. 4
B. 8
C. 
D. 
Mathematics