Answer:
0.675
Step-by-step explanation:
27 ÷ 40
Answer:
42%
Step-by-step explanation:
If the probability of the first machine breaking down is 30%, the probability of it operating normally is 100% - 30% = 70%
The probability of the second machine operating normally is 100% - 40% = 60%
So, the probability of both machines operating normally in one day is:
P = 70% * 60% = 0.7 * 0.6 = 0.42 = 42%
9514 1404 393
Answer:
51
Step-by-step explanation:
The rule gives the sequence ...
75, 69, 63, 57, 51, 45, ...
The 5th number in the sequence is 51.
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<em>Alternate solution</em>
The equation for the general term of an arithmetic sequence is ...
an = a1 +d(n -1) . . . . . for first term a1 and common difference d
Your sequence has first term 75 and common difference -6, so the equation is ...
an = 75 -6(n -1)
Then for n=5, the term is ...
a5 = 75 -6(5 -4) = 75 -24 = 51
The 5th term is 51.
Answer:
The mean will increase by 2.5
Step-by-step explanation:
The mean is just another word for the average of the data set. You can find this by adding all of the values and dividing by the number of values there are. (i.e 2+4+7+6+3+6+7 divided by 7). The original mean is 5. If you add 25, the average will increase to 7.5