3 years ago

How do you simplify this expression? - 3+8n+n- 10

1 answer:

6 0

You have 9n and -7 in total so the answer is 9n-7. You add up all the numbers and then add up the numbers with n attached to them

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Consider an experiment whose sample space consists of a countably infinite number of points. Show that not all points can be equ

ella [17]

Answer: if you have infinity points, which i will asume are the events, they cant have the same probability because then the probability will not be normalized, because in graph of prob vs variable, you will se infinite area under the curve if the probability is constant.

And yes, can all points have positive probability of occurring, but besides you medium value (the bell for example) you will see an asintotic decrease to the zero.

3 0

3 years ago

Two workers finished a job in 12 days. How long would it take each worker to do the job by himself if one of the workers needs 1

FromTheMoon [43]

Answer:

20 days

Step-by-step explanation:

t = time required by one worker to complete the job alone

(t+8) = time required by the other worker

So:

7.5/ t + 7.5/ (t + 8) = 1

Solve for t.