B.6
C.4
D.3
There are 6 math problems can brian finish during this time.
Unitary method is a process by which we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit.
Brian has 3/4 hour to work on his math problem. It takes him 1/8 hour to finish one mathproblem.
Brian has 3/4 hour to work on his math problem.
It takes him 1/8 hour to finish one math problem.
The number of mathproblems can brian finish during this time is;
Hence, there are 6 math problems can brian finish during this time.
Learn more about unitarymethod here;
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Using it's concept, it is found that there is a 0.7778 = 77.78% probability that the marble drawn will not be blue.
A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this questions, there are 8 + 6 + 12 + 10 = 36 marbles, of which 36 - 8 = 28 are not blue, hence the probability is given by:
p = 28/36 = 0.7778 = 77.78%
More can be learned about probabilities at brainly.com/question/14398287
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Answer:
7/9
Step-by-step explanation: I took the test
19.98 = x + x(1.6)
19.98 = 1.6x + x
19.98 = 2.6x
x = 7.68
x(1.6) = 12.29
The cost is $7.68 and the markup is $12.29. (Approximate due to rounding)
Hope this helps!! :)
5/6 x 138