Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. y
C. y8
D. y4
Answer: D
Mathematics
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Solve the equation. Express radicals in simplest form.x2 + 4 = 68
A. ±7 B. 8 C. 34 D. ±8
Mathematics
Use a graph to find an approximate solution to the equation. Round to the nearest thousandth.124(1.84)x/5 = 248
A. 4.399 B. 4.034 C. 7.334 D. 5.684
Mathematics
Find the difference.-13 - (-5)
A. -8 B. -18 C. 18 D. 8
Mathematics
Add or subtract as indicated. Write the answer in simplest form.
- 
A. - 
B. - 
C. 
D. 
Mathematics