Answer:
Yes
Step-by-step explanation:
The Y represents the days
the x represents the number of books
the 1/2 represents the amount of the book read, so this equation will work
Answer:
Step-by-step explanation:
Let T represent the total amount spent.
The word and implies addition so the equation would be T= 2.75g+3.35c .
Now plug in the g and c values given in part b
So T= 2.75(5.8)+3.35(6)
Next simplify the expression
This is what T or the total Spent equals
Answer:
30%
Step-by-step explanation:
1105 - 850 = 255
255 ÷ 850 = 0.3
0.3×850=30
30%
I think the value of x is 15
We have been given for a normal distribution the mean time it takes to walk to the bus stop is 8 minutes with a standard deviation of 2 minutes. And the mean time it takes for the bus to get to school is 20 minutes with a standard deviation of 4 minutes.
(a) Average time that it would take reach school can be obtained by adding the average times.
8+20 = 28 minutes.
(b) Standard deviation of the trip to school can be found as:
Therefore, standard deviation of the entire trip is 4.47 minutes.
(c) Let us first find z score corresponding to 30 minutes.
We need to find the probability such that
Therefore, the required probability is 0.67.
(d) If average time to walk to school is 10 minutes, then overall average time for the trip will be 10+20 = 30 minutes.
(e) Standard deviation won't change it will remain 4.47
(f) The new probability will be:
Therefore, probability will be 0.50.