Answer: C) 0.8664.
Step-by-step explanation:
Given, The tread life of tires mounted on light-duty trucks follows the normal probability distribution with
.
Let
be the sample mean tire life of any 4 tires.
Now , the probability that the mean tire life of these four tires is between 57,000 and 63,000 miles will be :-

For Very likely , the probability should lie between 0.95 and 1.
Hence, the correct answer is C) 0.8664.
Answer: multiply the denominator by the answer
Step-by-step explanation:
Answer: A. h(x) = 205x - 56
Step-by-step explanation:
Since, According to the question,
The amount she earns for her seafood demos is given by f(x) = 85x - 21 where x represents the number of days.
And, The amount she earns for her cake decorating demos is given by g(x) = 120x - 35.
Therefore if h(x) represents total amount she earns in x days.
Then h(x)= f(x)+g(x)=85 x - 21 + 120 x - 35=205 x-56
⇒h(x)=205 x-56
Thus, Option A is correct.
Answer:
(5x-11)+(11x-63)+(2x+20)
Step-by-step explanation:
If you have to solve for it then just add all your like terms into a simplified equation. 18x-54 would be the simplified version