Solve the system of equations. If the system is inconsistent or has dependent equations, say so.x +  y -  z = 3  4x + 2y - 2z = 12  -2x - y + z = -6

A. {(x, y, z)|-2x - y + z = -6}; dependent equations
B. {(3, 1, 1)}
C. {(3, 0, 0)}
D. ?; inconsistent system


Answer: A

Mathematics

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Find all numbers for which the rational expression is not defined.

A. a = 7 B. None C. a = 0 D. a = -7

Mathematics

Fill in the table by converting the given temperature into each of the other temperatures. Round to the nearest hundredth if necessary.CelsiusKelvinFahrenheit-10°C???200°K???100°F

A.

CelsiusKelvinFahrenheit
-10°C263.15°K14°F
-73.15°C200°K-99.67°F
37.78°C310.93°K100°F

B.
CelsiusKelvinFahrenheit
-10°C263.15°K14°F
73.15°C200°K-100°F
37.78°C310.93°K100°F

C.
CelsiusKelvinFahrenheit
-10°C263.15°K7.78°F
-73.15°C200°K-99.67°F
37.78°C310.93°K100°F

D.
CelsiusKelvinFahrenheit
-10°C263°K14°F
473.15°C200°K-99.67°F
37.78°C310.93°K100°F

Mathematics

In the figure below, XC = 40 ê and R = 30 ê. Find Z.

\
a. 50.0 ê
b. 41.7 ê
c. 35.0 ê
d. 66.6 ê
e. 70.0 ê

Mathematics

Simplify.

A.
B. 24 
C. 1
D.

Mathematics