Solve the equation. Round to the nearest tenth, if necessary.If an object is dropped, the distance it falls is given by d = 
gt2, where g is about 32 ft/sec2. How long would it take an object to fall 64 feet?
A. 0.5 sec
B. 2 sec
C. 1 sec
D. 4 sec
Answer: B
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If 
is an equilibrium solution of an equation of change involving 
, what is the value of
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?
?
A. 0
B. 5
C. -5
D. None of the above
Write the fraction as a decimal. If necessary, use repeating decimal notation.
A. 0.
B. 0.65
C. 0.6
D. 0.
Find the indicated rate.The city where Lu Na lives has a population of 2,433,982 people and an area of 109.9 square miles. What is the rate of number of people per square mile (the population density)?
A. 267,494,622 people/sq mi B. 0.0000452 people/sq mi C. 23,255 people/sq mi D. 22,147 people/sq mi
Find the probability.The table lists the eight possible blood types. Also given is the percent of the U.S. population having that type.
Let E be the event that a randomly selected person in the U. S. has type B blood. Let F be the event that a randomly selected person in the U. S. has RH-positive blood.Find P(F|E).
A. 0.818 B. 0.340 C. 0.720 D. 0.107