7. A multiple choice exam has 3 choices for each question. A student has studied enough so that the probability they will know the answer to a question is 0.5, the probability that they will be able to eliminate one wrong choice is 0.25, otherwise all 3 choices seem equally plausible. If they know the answer, they will get the question right. If not, they must guess from the 2 or 3 choices. What is the probability that the student gets the correct answer?

Q: You and a friend plan to meet in San Francisco for a Giants game. The ballpark is 49 miles from your…

A: My speed is 50mph  and I have to cover 49 miles.Answer: It will take 58 minutes 48 seconds for me.

Q: Melvin plays tennis and swims for a total of 110 minutes every day. He plays tennis 40 minutes more…

A:

Q: As part of a project we made two trips to a local lake. The first day we caught 325 fish and tagged…

A:

Q: A chain saw requires 3 hours of assembly and a wood chipper 4 hours. A maximum of 24 hours of…

A:

Q: Each day, Ed walks past a rectangular athletic field on his way home from school. If the field is…

A:

Q: Two investment have interest rates that differ by 1%. An investment for 1 year  at the lower rate…

A: Let  rate of interest r1  and r2 answer is r1 = 8% and r2 = 7% detailed solution with explanation is…

Q: Four partners share a business. Max owns 3/8, Sherry owns 2/5, Arian owns 1/10 and Duane owns the…

A: Profit is given by the difference of revenue and expenses the answer is the profit in this case…

Q: Charlie works in a beauty salon. He has three appointments today. The time needed for each…

A:

Q: Emma is playing a game with Amanda. Together they have 1,050 points and need to get 370 more points…

A: To determine the the points owned by Emma, we have to establish a relation ship between the points…

Q: The product of a number and five is less than or equal to the number minus four. find the solution…

A: GIVEN The product of a number and five is less than or equal to the number minus four

Q: The sum of a number and its is always zero.

A: It is known that a+-a=0 for all real numbers.

Q: There are two numbers whose sum is 72. One number (x) is twice the other (y). What are the numbers?…

A:

Q: e) Can Jimmy's dietary requirements be met by using only one of the cereals? Explain your answer. g)…

A: We will Formulate the LPP and solve it using graphical method.

Q: It takes Paul and Oscar 6 hours to set up an auditorium for a concert. Oscar has more experience and…

A:

Q: You take 12 semester hours at FTTC in each of the Spring and Fall semesters, and 6 semester hours in…

A:

Q: sum of two non-negative numbers x and y is 16. What is the smallest possible value of x2 + y2

A:

Q: Amazon can sell 20,000 copies of a new book for 16 per book. For each 1 reduction in price Amazon…

A: This question can be solved using the concept of maxima and minima.

Q: sha works for 7 hours she can rent out 6 apartments, and if she works for 8 hours she can rent out 9…

A: Solution : this refers to the additional number of benefits that Sasha gets when she works an extra…