Solve the inequality. Express your answer using interval notation. Graph the solution set.x(25x + 4) ? (5x + 7)2
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find percent notation.0.00936
A. 0.468% B. 0.000936% C. 0.936% D. 0.0936%
Mathematics
Refer to the following normal curve, with mean ? and standard deviation ?.
The standard deviation ? =
A. 40 B. 27 C. 100 D. 54 E. none of these
Mathematics
Use the right triangle shown below and find the missing length. Give an exact answer and a decimal approximation rounded to two decimal places. 
b = 5, c = 5
A. a = 30
B. a = -5
? 11.18
C. a = 5
? 11.18
D. a = 5
? 12.25
Mathematics
Rewrite the equation in standard form. Find the center and radius of the circle.x2 + y2 - 4y - 77 = 0
A. x2 + (y - 2)2 = 81 center (0, 2), r = 9 B. x2 + (y + 2)2 = 81 center (0, -2), r = 9 C. x2 + (y - 2)2 = 81 center (0, -2), r = 9 D. (x - 2)2 + y2 = 81 center (2, 0), r = 9
Mathematics