Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in ordered pair form.
A. {(0, 1)}
B. {(1, 0)}
C. ?
D. {(-1, 0)}
Answer: A
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A computer password is made up of four characters. Each character can be a capital letter (A through Z), a lowercase letter (a through z) or a digit (0 through 9).How many passwords consist entirely of letters?
A. 52 × 51 ×50 × 49 B. 52 × 4 C. 524 D. 452 E. none of these
Identify the triangle as scalene, isosceles, or equilateral.
A. Equilateral B. Isosceles C. Scalene
A box contains one each of $2, $8, $40, $65, and $100 bills. You reach in and withdraw one bill. What is the expected value? Please round your answer to the nearest dollar. ? $__________
Fill in the blank(s) with the appropriate word(s).
Find the standard deviation. Round to the nearest tenth.17, 12, 20, 20, 20, 6, 9, 14, 13
A. 4.8 B. 5.5 C. 1.8 D. 5.1