Read the method of solving the system of equations.
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Solving the first equation for y, we have 
. Substituting this value of y into the second equation, we have
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The equation is quadratic. We write it in standard form and apply the quadratic formula.
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Use the method shown above to solve the system of equations.
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A. ?
B. ?
C. 
D. ?
E. ?
Answer: C
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Solve the equation for the indicated variable.
+ 
= 
for S (mirror equation)
A. S = 
B. S = 
C. S = 
D. S = 
Calculate the flux of the field F across the closed plane curve C.F = x2i + y2j; the curve C is the closed counterclockwise path around the triangle with vertices at (0, 0), (1, 0), and (0, 2)
A. 0
B. 6
C. - 
D. 2
Find an approximate value of x using a scientific calculator. If necessary, round to four decimal places.ln x = -0.35
A. 0.7047 B. 2.2387 C. 0.4467 D. 1.4191
Find the probability.Based on meteorological records, the probability that it will snow in a certain town on January 1st is 0.199. Find the probability that in a given year it will not snow on January 1st in that town.
A. 5.025 B. 0.801 C. 0.248 D. 1.199