Change the following number from scientific notation to decimal notation.
2.13 × 10-2
A. 0.0213
B. 213
C. 21.3
D. 2.13
E. 0.213
Answer: A
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Find parametric equations for the line described below.The line through the points P(-1, -1, -1) and Q(7, -5, 7)
A. x = t + 8, y = t - 4, z = -1t + 8 B. x = 8t - 1, y = -4t - 1, z = 8t - 1 C. x = t - 8, y = t + 4, z = -1t - 8 D. x = 8t + 1, y = -4t + 1, z = 8t + 1
Find all the first order partial derivatives for the following function.f(x, y, z) = x2y + y2z + xz2
A. 
= 2xy; 
= x2 + 2yz; 
= y2 + 2xz
B. 
= 2xy + z2; 
= x2 + yz; 
= y2 + xz
C. 
= 2y + z2; 
= x2 + 2z; 
= y2 + 2x
D. 
= 2xy + z2; 
= x2 + 2yz; 
= y2 + 2xz
Solve the system by substitution. 0.05x + 0.06y = 0.03-0.05x + y = 3.15
A. ? B. {(3, -3)} C. {(-0.3, 0.3)} D. {(-3, 3)}
Write the decimal point in the correct location. 0.003 × 26 = 78
A. 78. B. 0.0078 C. 0.78 D. 0.078