You can look at its slope and its y-intercept. Changes or similarities in them determines the number of solutions.
Answer:
Kevin is 7, Uncle Rob is 54
Step-by-step explanation:
Let's express the information given by the question statement.
1. Tonya (T) is twice Kevin's (K) age: T = 2K
2. In three years, Tonya (T) will be 17: T + 3 = 17
3. In another three years, Uncle Rob (R) will be 3x Tonya's (T) age: R = 3(T+3+3)
From 2, we can say that Tonya is now 14.
First equation becomes: 17 = 2K ... which means K = 7, Kevin is 7.
Third equation becomes: R = 3 (14 + 3 + 3) = 3 (20) = 60
In six years, Rob will be 60. So, now, he's 54 (60-6).
Answer:
The answer is "".
Step-by-step explanation:
Please find the complete question in the attached file.
We select a sample size n from the confidence interval with the mean and default , then the mean take seriously given as the straight line with a z score given by the confidence interval
Using formula:
The probability that perhaps the mean shells length of the sample is over 4.03 pounds is
Now, we utilize z to get the likelihood, and we use the Excel function for a more exact distribution
the required probability:
Answer:
It would take the plane about 4.17 hours to fly the whole round trip.
Step-by-step explanation:
Assuming that the distance from Chicago to Boston is 2000/2 = 1000 miles.
Since the wind is blowing from Chicago to Boston, when the plane is traveling to Boston, the velocity of the wind adds to the its velocity:
;
therefore, the time it takes for the plane to go from Chicago to Boston is
Now, as the plane flies back from Boston to Chicago, the wind is blowing opposite the direction of its movement; therefore, the wind's velocity subtracts from the velocity of the plane:
and the time taken during the trip is
Therefore, the total time taken during the whole round trip is
Therefore, on the windy day, it would take the plane 4.17 hours to fly the whole round trip
To answer the problem given above, divide the difference of the prices by the original price and multiply the answer by 100%. This is,
((22450 - 19450) / 19450) x 100% = 15.42%
Therefore, the percentage markup of the new car is approximately 15.42%.