Write the phrase as a mathematical expression. Use x as the variable.135 added to a number
A. 135x
B. 135 + x
C. 135
D. 135 - x
Answer: B
Mathematics
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Rewrite the expression in terms of exponentials and simplify the results.cosh 9x - sinh 9x
A. 2e-9x B. e-9x C. e9x - e-9x D. -9x
Mathematics
Solve using the addition principle and/or the multiplication principle.- 
x = 18
A. -144 B. -26 C. -136 D. -126
Mathematics
Find the exact value of the expression. Do not use a calculator.If tan ? = 2, find the exact value of cot 
.
A. 3
B. 2
C. 
D. 1
Mathematics
Find the limit (if it exists).
?
?
?
A. 
B. 
C. ?
D. 
E. does not exist
Mathematics