Evaluate the expression x - y for the given values of the variables.x = -28, y = 70
A. -42
B. 98
C. -98
D. 42
Answer: C
Mathematics
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Solve the problem.Find the sum of the series 
. [Hint: Write the series as 1 + 
= 1 + 
+ 
.]
A. 3(e - 1) B. e + 3 C. 2e D. 4e - 5
Mathematics
Use the given vectors to find the indicated expression.v = 5i + 3j + 5k, w = -3i + 5j - 3k, u = 4i + 2j - 5kFind w ? (v × u).
A. 0 B. 206 C. 306 D. 386
Mathematics
Find the domain and range.{(-1,4), (-1,-9), (-11,2), (-7,3), (-5,9)}
A. domain = {-1, 12, -11, -5, -7}; range = {-9, 2, 9, 3, 4} B. domain = {-1, -2, -11, -5, -7}; range = {-9, 2, 9, 3, 4} C. domain = {-9, 2, 9, 3, 4}; range = {-1, -1, -11, -5, -7} D. domain = {-1, -11, -5, -7}; range = {-9, 2, 9, 3, 4}
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.
A. 
B. 
C. 
D. 
Mathematics