Solve the equation.
+ 
= 
A. {-2}
B. {2}
C. {5}
D. {-5}
Answer: C
Mathematics
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Find the probability.A sample of 4 different calculators is randomly selected from a group containing 14 that are defective and 26 that have no defects. What is the probability that at least one of the calculators is defective?
A. 0.140 B. 0.164 C. 0.836 D. 0.821
Mathematics
Find the indicated term.If a1 = -4 and r = - 
, find a4.
A. 1
B. 
C. 256
D. - 
Mathematics
Use these equations to convert between the two systems. C = 
(F - 32) F = 
C + 32Round answer to the nearest tenth of a degree if necessary.C = 87°
A. F = 30.6° B. F = 66.1° C. F = 214.2° D. F = 188.6°
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Mathematics