Write an equation for the graph.
A. x = y + 4
B. y = x + 4
C. x = 4
D. y = 4
Answer: D
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Use a calculator to approximate the square root to the nearest thousandth.
A. 8.059 B. 65.000 C. 8.067 D. 8.062
Simplify the expression. Assume that all variables are positive. ?
A. 2x4
B. 2x8
C. 4x4
D. 2
Completely factor the polynomial or state that the polynomial is prime.25x2 - 9
A. (5x + 3)(5x - 3) B. (5x + 3)2 C. (5x - 3)2 D. (25x + 1)(x - 9)
A solution is an acid if its pH is less than 7 and a base if its pH is greater than 7. The pH is defined by where [H+] is the concentration of hydrogen ions in the solution. Use this information to answer the question.A mixture has a pH of 5.1. Find the concentration of hydrogen ions [H+] in the mixture. Is the mixture an acid or a base?
A. 105.1, acid B. 10-5.1, acid C. 10-5.1, base D. 105.1, base