Solve using the quadratic formula. Use a calculator to approximate the solution to three decimal places.
x2 + 
= x
A. 3 ± 2.449
B. 3 + 2.449i
C. -0.3 ± 2.449i
D. 3 ± 2.449i
Answer: D
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Solve the problem.A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 208 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
A. 8112 ft2 B. 10,816 ft2 C. 5408 ft2 D. 2704 ft2
Select the lesser of the two given numbers.- 
, - 
A. - 
B. - 
What percent of the total population is found between the mean and the z-score?
Standard Normal Distribution; z-scores z 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.090.0 0.0000 0.0040 0.0080 0.0120 0.0160 0.0199 0.0239 0.0279 0.0319 0.03590.1 0.0398 0.0438 0.0478 0.0517 0.0557 0.0596 0.0636 0.0675 0.0714 0.07530.2 0.0793 0.0832 0.0871 0.0910 0.0948 0.0987 0.1026 0.1064 0.1103 0.11410.3 0.1179 0.1217 0.1255 0.1293 0.1331 0.1368 0.1406 0.1443 0.1480 0.15170.4 0.1554 0.1591 0.1628 0.1664 0.1700 0.1736 0.1772 0.1808 0.1844 0.18790.5 0.1915 0.1950 0.1985 0.2019 0.2054 0.2088 0.2123 0.2157 0.2190 0.22240.6 0.2257 0.2291 0.2324 0.2357 0.2389 0.2422 0.2454 0.2486 0.2517 0.25490.7 0.2580 0.2611 0.2642 0.2673 0.2704 0.2734 0.2764 0.2794 0.2823 0.28520.8 0.2881 0.2910 0.2939 0.2967 0.2995 0.3023 0.3051 0.3078 0.3106 0.31330.9 0.3159 0.3186 0.3212 0.3238 0.3264 0.3289 0.3315 0.3340 0.3365 0.33891.0 0.3413 0.3438 0.3461 0.3485 0.3508 0.3531 0.3554 0.3577 0.3599 0.3621? A. 34.38% B. 34.13% C. 44.13% D. 39.13% E. 19.13%
Solve the problem.On a test, Sunita has an x percent chance of correctly answering a question for which she has not studied. The chance that she will correctly answer a question for which she has studied is 4x. She is happy to see that both of the first two questions on the test are questions for which she has studied. The chance that she doesn't answer either of these questions correctly is (1 - 4x)2, where x is expressed as a decimal. Multiply this expression.
A. 1 - 16x2 B. 1 - 4x + 16x2 C. 1 + 8x - 16x2 D. 1 - 8x + 16x2