Solve.A satellite is to be put into an elliptical orbit around a moon. The moon is a sphere with radius of 584 km. Determine an equation for the ellipse if the distance of the satellite from the surface of the moon varies from 310 km to 233 km.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
Mathematics
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Find a polar equation for the circle.x2 + (y - 9)2 = 81
A. r = 18 cos ? B. r = -18 sin ? C. r cos ? = -18 D. r = 18 sin ?
Mathematics
Find the circumference and area of a circle having the given diameter or radius. Use 3.14 for ?. Round your results to the nearest tenth.r = 5.5 cm
A. 34.5 cm; 34.5 cm2 B. 34.5 cm; 95 cm2 C. 17.3 cm; 69.1 cm2 D. 17.3 cm; 379.9 cm2
Mathematics
Find the first term and the common difference for the arithmetic sequence. Round approximations to the nearest hundredth.a5= 112, a34= 605
A. a1= 44, d = 493 B. a1= 44, d = 17 C. a1= 493, d = 17 D. a1= 493, d = 44
Mathematics
Multiply and simplify.
A. 
B. 
C. 
D. 
Mathematics