Solve.x2 = 81
A. 40.5
B. -9, 9
C. -10, 10
D. 9
Answer: B
Mathematics
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Factor completely.16x2 + 40xy + 25y2
A. (4x + 5y)(4x - 5y) B. (4x + 5y)2 C. (4x - 5y)2 D. (16x + 1)(x + 25)
Mathematics
Complete the magic (addition) square.Use each number 10, 11, 12, 13, 14, 15, 16, 17, and 18 once.
A. 
B. 
C. 
D. 
Mathematics
If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.(102/3)1/2
A. 3.16 B. -2.15 C. 2.36 D. 2.15
Mathematics
Determine whether the system corresponding to the given augmented matrix is dependent or inconsistent. If it is dependent, give the solution.
A. dependent; (9, -10) B. dependent; (-9, 10) C. dependent; (-9, 10, -5) D. inconsistent
Mathematics