Use a proportion to solve the problem.Joan can mow a 7-acre field in 4 hours. How long would it take her to mow a 4.9-acre field?
A. 0.7 hr
B. 5.8 hr
C. 2.8 hr
D. 4.8 hr
Answer: C
Mathematics
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Graph the function.f(x) = -x4 - 2x2
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Write an expression and simplify to find the perimeter of the following:
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the problem.Find an equation of the line containing the centers of the two circles x2 + y2 - 10x - 12y + 60 = 0
and x2 + y2 + 2x - 2y - 2 = 0
A. 5x - 6y + 11 = 0 B. 5x + 6y + 11 = 0 C. 7x - 4y + 11 = 0 D. -5x - 6y + 11 = 0
Mathematics
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.
A. 
B. 
C. 1
D. 4
Mathematics