Use the following definitions to determine if the statement is true or false. N = {x : x is a natural number}I = {x : x is an integer}R = {x : x is a real number}W = {x : x is a whole number}Q = {x : x is a rational number}W is a subset of W, I, Q, and R.
A. True
B. False
Answer: A
Mathematics
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Consider only the discriminant, b2 - 4ac, to determine whether one real-number solution, two different real-number solutions, or two different imaginary-number solutions exist.x2 + 3x + 7 = 0
A. Two different real-number solutions B. Two different imaginary-number solutions C. One real solution
Mathematics
Use a calculator to approximate the number. (Round your answer to three decimal places.)
?
A. 2.828 B. 256.000 C. 8.000 D. 16.000 E. 68.000
Mathematics
Simplify the exponential expression. Assume that variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Mathematics
Add or subtract.(r3 - 9rs + 7s2) - (9r3 + rs - 3s2)
A. -8r3 - 10rs + 10s2 B. -9r3 - 9rs + 4s2 C. -8r3 - 10rs + 4s2 D. -8r3 - 8rs + 10s2
Mathematics