9a/13 + 6ab/13 + 4a/13 =
a. (a + 6ab)/13
b. (9a + 6ab + 4a)/13
c. (13a + 6ab)/13
d. 19ab/13
e. 19a3b/13
c. (13a + 6ab)/13
Mathematics
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Subtract.
A. 7452 B. 7366 C. 7446 D. 8452
Mathematics
Factor completely. If the polynomial is prime, state so.243x3y6 - 225x6y3
A. 9x3y3(3y + 5x)(9y2 - 15xy + 25x2) B. 9x3y3(3y - 5x)(9y2 + 15xy + 25x2) C. 9x3y3(27y3 - 25x3) D. 9(3xy2 + 5x2y)(9x2y4 - 15x3y3 + 25x4y2)
Mathematics
Solve the equation.
+ 
= -1
A. No solution
B. 
C. 1
D. 0
Mathematics
Solve the problem. Round to the nearest cent or tenth of a percent.An item has a 27.9% markup based on selling price. What is the equivalent markup percent based on the cost?
A. 21.8% B. 78.2% C. 61.3% D. 38.7%
Mathematics