Solve. If necessary, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole.40% of the teachers in a school are female. If there are 255 teachers altogether, how many teachers are female?
A. 638 teachers
B. 102 teachers
C. 16 teachers
D. 153 teachers
Answer: B
Mathematics
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Make the required change in the given equation.z = cot ? to Cartesian coordinates
A. z = 
B. x2 + y2 = z
C. 
= 
D. z = 
Mathematics
Solve the problem.If u = 
, v = 
, and w = 
, evaluate u ? v - u ? w.
A. -2 B. 30 C. 7 D. 3
Mathematics
Determine whether the graph of the equation is a circle or an ellipse.9x2 + 90x + 25y2 - 50y + 25 = 0
A. Ellipse B. Circle
Mathematics
Provide an appropriate response. Is the statement true or false?9y3 + 2y5 = 11y8
A. True B. False
Mathematics