Perform the indicated operation. Assume that all variables represent nonnegative real numbers.8
+ 5x
A. 85x
B. 45x
C. 85
D. (8
+ 45
)x
Answer: A
Mathematics
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Find the mistake, then find the correct answer.Solve for x: x2 + 9 = 73line 1 x2 + 9 = 73line 2 
line 3 x2 = 64line 4 
= 
line 5 x = 8
What will be an ideal response?
Mathematics
Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
(-15)
A. 5y B. -5y C. 3y D. 4y
Mathematics
Find the foci of the given hyperbola.
- 
= 1
A. (-1, -21), (-1, 19) B. (-1, -13), (-1, 11) C. (2, 19), (2, -21) D. (-13, -1), (11, -1)
Mathematics
Find the exact value of y, or state that y is undefined.y = sec-1 
A. - 
B. 
C. 
D. - 
Mathematics