Write the whole number in expanded form.25,186
A. 25,186
B. 2000 + 500 + 10 + 86
C. 20,000 + 5000 + 100 + 80 + 6
D. 60,000 + 8000 + 100 + 50 + 2
Answer: C
Mathematics
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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. ?
Mathematics
Use Newton’s method and x1 = ?1 to find an approximate solution of ?2cos x = x + sin x .
What will be an ideal response?
Mathematics
Find the matrix product, if possible.
A. 
B. 
C. 
D. Does not exist
Mathematics
Graph the system of inequalities.x + 2y ? 2 x + y ? 0
A. 
B. 
C. 
D. 
Mathematics