If Cramer's rule were used to solve this system, the value for y would be the ratio of two determinants.  Find the value of the numerator determinant.
?

?

A. 134
B. 60
C. 230
D. 150
E. 30


Answer: B

Mathematics

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Solve the problem.A certain part of a metropolitan area has a palindromic, 5-digit area code, say abcde, satisfying these conditions:a, b and c are all multiples of two and are all less than 8;a ? b but a + b = 6; c ? d but a + c = 12;e ? b or d; b + d ? 4.Determine the area code.

A. 60606 B. 24842 C. 44244 D. 42024

Mathematics

Graph the system of inequalities. Shade the region that represents the solution set.

A.

B.

C.

D.

Mathematics

Factor completely. State that the polynomial is prime if it cannot be factored.9x2 + 6x + 1

A. (3x + 1)(3x - 1) B. (3x + 1)2 C. (3x - 1)2 D. Prime

Mathematics

Given ln 2 = 0.6931 and ln 5 = 1.6094, find the following.ln 50

A. 1.1155 B. 2.231 C. 2.9956 D. 3.9119

Mathematics