Provide an appropriate response.Suppose that you are solving a system of 4 linear equations and 4 variables by the Gaussian elimination method. If you use the transformation 2R4 + R3, which row(s) of the augmented matrix will change?
A. Rows 4 and 3
B. Row 3
C. Row 4
D. No rows will change.
Answer: B
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Use exponential notation to write the repeated multiplication.9 ? 7 ? 7 ? 7 ? 7 ? 7
A. 19 ? 57 B. 9 ? 75 C. (9 ? 7)5 D. 635
Solve the problem.In a sale, the price of a computer is reduced from $1240 to $1070. Find the discount and the rate of discount. Round the discount rate to the nearest tenth of a percent if necessary.
A. $170; 13.7% B. $160; 12.9% C. $170; 15.9% D. $160; 15%
Find all solutions to the equation. Express the solution in degrees.cos x = -1
A. 180° + 360°n B. 90° + 360°n or 270° + 360°n C. 360°n or 180° + 360°n D. 360°n
Provide an appropriate response.The total number of reported cases of AIDS in the United States has risen from 372 in 1981 to 100,000 in 1989 and 200,000 in 1992. Does a linear equation fit this data? Explain.
What will be an ideal response?