Determine if the following is an identity or contradiction.4(x - 7) - 5(x - 7) = 7 -(x + 19)
A. Contradiction
B. Identity
Answer: A
Mathematics
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Describe the level surfaces for the given function.f(x, y, z) = 7x2 + 3y2 + 5z2 - 6
A. Ellipsoids B. Hyperboloids of two sheets C. Hyperbolic Paraboloids D. Hyperboloids of one sheet
Mathematics
Use a calculator to approximate the logarithm to four decimal places.log300 30
A. 0.5963 B. 1.677 C. 3.4012 D. 5.7038
Mathematics
Solve the equation.
+ 
= - 
A. 
B. 
C. 
D. 
Mathematics
The price of a certain commodity in dollars per unit at time t (measured in weeks) is given by
?
.
?
How fast is the price of the commodity changing at 
?
?
A. Increasing at the rate of $13/wk. B. Increasing at the rate of $19/wk. C. Decreasing at the rate of $19/wk. D. Increasing at the rate of $6/wk. E. Decreasing at the rate of $13/wk.
Mathematics