Find the unknown length in the right triangle. Simplify the answer if necessary.
A. 2
B. 4
C. 2
D. 2
Answer: B
Mathematics
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Solve the system using substitution.
A. 
B. no solution
C. 
D. 
Mathematics
A function of x is depicted in the graph. Find any input values that produce the indicated output.f(x) = -2
A. x = -4 and x = 0 B. x = 4 and x = 0 C. x = -8 and x = 4 D. x = -4
Mathematics
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.30
A. -1 B. 1 C. 3 D. 0
Mathematics
Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.(x-8)7
A. -x56
B. -8x56
C. -8x7
D. 
Mathematics