Solve. Use ? ? 3.14. Round to the nearest tenth unless otherwise directed.The Landstar satellite orbits the Earth in a circular pattern. Assume that the radius of orbit is 
If the satellite goes through one orbit around the Earth in 4 hours, what is its speed in kilometers per hour?
A. 5181 km/hr
B. 10,362 km/hr
C. 34,194,600 km/hr
D. 262.7 km/hr
Answer: B
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Frank's algebra grade is based on the average of four exams, which will count equally. His grades are 75, 80, 70 and 85. Find his average.
A. 72.5 B. 77.5 C. 82.5 D. 92.5 E. 87.5
Find the center of mass of a thin plate covering the given region with the given density function.The region between the curve y = 
and the x-axis from 
to 
with the density function 
A. 
= 60, 
= 12
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
Which of the following is an important consideration when designing a four-column lesson?
a. Students' preconceptions b. Conceptual and procedural knowledge development c. Supporting metacognition d. All of the above e. None of the above
Factor the special products, which are the sum or difference of two perfect cubes.125k3 + m3
A. (5k + m)(25k2 + 5km + m2) B. (5k + m)(25k2 + m2) C. (5k + m)(25k2 - 5km + m2) D. (5k + m)(25k2 - 5km - m2)