Solve. x - y + 4z = 44x + z = 0 x + 3y + z = -12

A. (0, 0, -4)
B. (0, -4, 4)
C. (0, -4, 0)
D. (0, 4, -4)


Answer: C

Mathematics

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Solve the problem.The voltage drop V across a resistor is the product of the current i (in A) and the resistance R (in ?). Find the possible voltage drops across a variable resistor R, if the minimum and maximum resistances are between 2.4 k? and 3.4 k?, respectively, and the current is constant at 2.5 mA. Graph the solution. 

A. V < 6 or V > 8.5

B. V < 6

C. 4.9 < V < 5.9

D. 6 < V < 8.5

Mathematics

Refer to the following figure. Which points have a negative x-coordinate and a negative y-coordinate? ?

What will be an ideal response?

Mathematics

Determine whether the trinomial is a perfect square.x2 - 15x + 225

A. No B. Yes

Mathematics

Factor completely. If prime, so state.9y4 - 39y3 + 36y2

A. 3y2(3y + 4)(y - 3) B. 3y2(3y - 4)(y - 3) C. y2(3y - 4)(y - 3) D. 3y2(3y - 4)(y + 3)

Mathematics