Solve the problem. Use 3.14 to approximate the value of ?. Round to nearest tenth unless instructed differently.The diameter of a discus is about 8.65 in. What is the area of one flat surface of a discus? (Round to the nearest hundredth.)

A. 58.74 in.2 
B. 27.16 in.2 
C. 29.37 in.2
D. 234.94 in.2 


Answer: A

Mathematics

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Find the absolute value.|-11|

A. ± 11 B. 0 C. -11 D. 11

Mathematics

Solve the problem.The voltage drop V across a resistor is the product of the current i (in A) and the resistance R (in ?). Find the possible voltage drops across a variable resistor R, if the minimum and maximum resistances are between 2.4 k? and 3.4 k?, respectively, and the current is constant at 2.5 mA. Graph the solution. 

A. V < 6 or V > 8.5

B. V < 6

C. 4.9 < V < 5.9

D. 6 < V < 8.5

Mathematics

Solve. Write the solution set using set-builder notation and using interval notation. Graph the solution set. 4n - 10 > 3n + 2

A. {nn > 12}; (12, ?)

B. {nn < 12}; (-?, 12)

C. {nn ? -8}; (-?, -8]

D. {nn ? -8}; [-8, ?)

Mathematics

Solve the problem.A cereal manufacturer uses three large overhead bins to hold the three ingredients in one of its cereal mixes. Bin A delivers a premeasured quantity of dried fruit every 25 minutes, bin B delivers raisins every 35 minutes, and bin C delivers flakes every 10 minutes. If they start the morning shift at the same time, how long before they deliver their ingredients at the same time again?

A. 70 minutes B. 700 minutes C. 175 minutes D. 350 minutes

Mathematics