Solve the system by substitution.5x + 7y = 65x + 7y = 12
A. {(5, 7)}
B. {(x, y) | 5x + 7y = 6}
C. ?
D. {(1, 1)}
Answer: C
Mathematics
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Simplify the expression.-|-11|
A. 11 B. 1 C. -11 D. -1
Mathematics
Find the present value P0 of the amount P due t years in the future and invested at interest rate k, compounded continuously.P = $100,000, t = 15 yr, k = 4%
A. $96,078.94 B. $182,211.88 C. $54,881.16 D. $55,044.96
Mathematics
The regression model for the data shown in the table is y = 2.3x + 3.9.
 figure 1.png)
Plot the data and the model on the same axes.
Mathematics
Find the work done by F over the curve in the direction of increasing t.F = -4zi + 2xj + 10yk; C: r(t) = ti + tj + tk, 0 ? t ? 1
A. W = 
B. W = 4
C. W = 8
D. W = 16
Mathematics