Answer:
-115
Step-by-step explanation:
From the system of equations, we have 3 unknowns and 3 equations. Therefore, it can be solved.
<span>3x - 2y + 2z = 30 (1)
</span><span>-x + 3y - 4z = -33 (2)
</span><span>2x - 4y + 3z = 42 (3)
We can write equation 2 x as a function of y and z and substitute the new equation to the other equations.
</span>x =3y - 4z + 33 (2)
3 (3y - 4z + 3)<span> - 2y + 2z = 30 (1)
</span>2 (3y - 4z + <span>3)</span> - 4y + 3z = 42 (3)
We simplify and solve the equations and we get values,
x = 4
y = -7
z = 2
Answer:
The area is about 153.938
Step-by-step explanation:
To find the area of a circle, you have the equation
πr squared
the diameter is 14, so the radius is 7.
pi 7 squared is equal to about 153.938
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Answer:162.9
Step-by-step explanation:I gotchu
8.3%= 0.083
567.31 * .083 = 47.086 = 47.09
567.31+47.09= $614.40
Total cost is $614.40
