Find the area of the surface obtained by rotating the curve about the y-axis.
None of these
Mathematics
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Determine if the item described is designed in accordance with the golden ratio.A formal garden has a width of 28.90 meters and a length of 53.75 meters.
A. Yes B. No
Mathematics
Multiply.(x + 7)(x + 9)
A. x2 + 63x + 16 B. x2 + 32x + 63 C. x2 + 63 D. x2 + 16x + 63
Mathematics
Expand.(
+ 1)5 - (
- 1)5
A. 44
B. 352
C. 44
D. 40
Mathematics
Solve the problem.For two sections of a circuit connected in parallel, current is given by I = I1 + I2 and impedance is given by 
Calculate the impedance if 
and 
A. 17.67 - 12.33i ? B. 8.76 - 6.06i ? C. 13.14 - 9.09i ? D. 0.051 - 0.036i ?
Mathematics