Answer:
It's D (a = 20 because the rate of change is –3.)
Step-by-step explanation:
I did the test and that was the correct answer
Will the square roots of perfect squares always be irrational numbers
2 answers:
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Answer:
0.55
Step-by-step explanation:
There are four things you need to keep in mind,and the question is too easy to solve , so following are those four things
1)Jamal travelling by Taxi before 7 PM
It is given that Jamal uses the bus for 70 percent of the time so he will use the taxi for (100-70)%=30% of the time.
and also it is given that he arrives home by taxi after 7 PM , 15% of the time so he will arrive home by taxi before 7 PM ,(100-15)=85% of the time,
so by multiplication law of probability , the probability that Jamal will arrive by taxi before 7 PM =0.30*0.85=.255
2)Jamal travelling by Taxi after 7 PM
Similarly by considering the above situations as described in first part,
the probability that Jamal will arrive by taxi after 7 PM=0.30*0.15=.045
3) Jamal travelling by Bus before 7 PM
Now considering the case of the bus, it is given that Jamal arrives home after 7 PM 8 percent of the time. so for before 7 PM it will be 100-8= 92%
Similarly the probability that Jamal will arrive by bus before 7 PM=0.70*0.92=.644
4) Jamal travelling by Bus after 7 PM
Similarly on the basis of above explanation we can easily say that the probability that Jamal will arrive by bus after 7 PM=0.70*.08=.056
so, the probability that Jamal chose to get home from work by bus, given that he arrived home after 7 pm=
Answer:
83,491.67 dollars
Step-by-step explanation:
Given that a certain electronics manufacturer ound that the average cost C C to produce x DVD/Blu- ray players can be found using the equation
To find the minimum average cost per machine we can use derivative test.
we find first and second derivative.
If for a particular value of x first derivative is 0 and second derivative is positive, then that x satisfies the minimum cost criteria.
Second derivative is always positive
I derivative =0 gives
For 83 players the cost would be minimum
Minimum cost =