Determine if the given ordered triple is a solution of the system. x - y + 5z = -20
z = -3 x + 3y + z = 12(-3, 5, 0)
A. Yes
B. No
Answer: B
Mathematics
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Solve.x2 - 6x + 9 = 4
A. 2, -2 B. 7 C. 1, -5 D. 5, 1
Mathematics
Find PO when AP = 9.3 dB and Pin = 0.030 W.
a. 88 mW b. 255 mW c. 326 mW d. 408 mW e. 490 mW
Mathematics
Solve the problem.The table shows the population of a certain city in various years. The population of the city f(x), in hundreds of thousands, can be modeled by f(x) = axb, where x represents the number of years since 1995. Estimate the population of the city in the year 2021. (You will first need to use regression to estimate the values of a and b).
A. 1,318,550 B. 1,365,641 C. 1,177,277 D. 1,240,963
Mathematics
Find an equation of a parabola satisfying the given conditions.Focus at (0, -10), directrix y = 10
A. x2 = -10y B. y2 = -40x C. y = -40x2 D. x2 = -40y
Mathematics