If n(A?B) = 38, n(A?B) = 3, and n(B) = 19 find n(A).
a. 19
c. 57
d. 35
b. 22
Mathematics
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Provide an appropriate response.Solve the proportion: 
= 
A. -3 B. 3 C. 10 D. -10
Mathematics
Find the exact value of the expression.sin (-960°)
A. 
B. 
C. -1
D. 
Mathematics
Use the formula for Sn to find the sum of the first five terms of the geometric sequence. Round to the nearest hundredth, if necessary.3, 
, 
, 
, 
, . . .
A. 
B. 1023
C. 
D. 
Mathematics
Simplify the expression. Write the result using positive exponents only.(-5x4y-5)(3x-1y)
A. 
B. 
C. 
D. -15x3y6
Mathematics