Combine the following, if possible.18
+ x
A. 18x
B. 19x2
C. 18x2
D. 19x
Answer: D
Mathematics
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Replace the polar equation with an equivalent Cartesian equation.r2 + 2r2 sin ? cos ? = 225
A. x2 + 3y2 = 225 B. x2 + y2 = 225 C. x + y = 15 D. x + y = ±15
Mathematics
Simplify.
+ 
A. 
B. 
C. 
D. 
Mathematics
Find dy/dx by implicit differentiation. If applicable, express the result in terms of x and y.x2y5 + 9y = 9x - 1
A. 
B. 
C. 
D. 
Mathematics
In the number 7248, what is the decimal value of:
a. 7 b. 2 c. 4 d. 7248
Mathematics