The average rate of change of candle height from time 45 minutes to time 109 minutes is -1 inch per 64 minutes.
What does average rate of change mean?The average rate of change is a measure of how quickly one quantity changes relative to another. It is calculated by dividing the difference between two values by the difference in time between those two values. It is a useful metric when trying to understand the speed at which a given quantity is changing over time.
For example, To calculate the average rate of change in the number of students enrolled in a particular school over the course of 5 years. In year 1, the school had 200 students enrolled and in year 5 it had 350 students enrolled. To calculate the average rate of change, one would divide the difference between the two values (150 students) by the difference in time between them (4 years):
Average rate of change = (350-200) / (5-1) = 150 / 4 = 37.5
This means that, on average, the school's enrollment increased by 37.5 students each year.
The table showing the height of a pyramid candle as it burns can be calculated by dividing the change in height (2 inches) by the change in time (64 minutes).
Change in height = 2 inches
Change in time = 64 minutes
Average rate of change = (2 inches) / (64 minutes) = -1 inch per 64 minutes
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NEED HELP ASAP:In the year 2000, a person bought a new car for $15000. For each consecutive year
after that, the value of the car depreciated by 11%. How much would the car be worth
in the year 2004, to the nearest hundred dollars?
The car would be worth $9400 in the year 2004.
How to determine the worth of the car?If the car depreciates by 11% each year, then its value at the end of each year will be 89% of its value at the beginning of the year (100% - 11% = 89%). Therefore, the value of the car after 1 year will be:
$15000 * 0.89 = $13350
The value of the car after 2 years will be:
$13350 * 0.89 = $11881.50
The value of the car after 3 years will be:
$11881.50 * 0.89 = $10576.77
The value of the car after 4 years (in the year 2004) will be:
$10576.77 * 0.89 = $9422.19
Therefore, the car would be worth $9400 in the year 2004.
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Toby goes on holiday to Geneva, Switzerland. In Geneva, Toby sees a watch costing 193. 75 CHF (Swiss Francs). In Manchester, an identical watch costs £145. Given that £1 = 1. 55 CHF
a) In which city is the watch cheaper?
b) By how much is it cheaper (in £)?
To answer this question, we will need to convert the price of the watch in Geneva to pounds and compare it to the price of the watch in Manchester.
First, let's convert the price of the watch in Geneva from CHF to pounds:
193.75 CHF ÷ 1.55 CHF/£ = 125 pounds
Now, we can compare the price of the watch in Geneva to the price of the watch in Manchester:
125 pounds (Geneva) < 145 pounds (Manchester)
Therefore, the watch is cheaper in Geneva.
To find out by how much it is cheaper, we can subtract the price of the watch in Geneva from the price of the watch in Manchester:
145 pounds - 125 pounds = 20 pounds
So, the watch is 20 pounds cheaper in Geneva.
In conclusion, the watch is cheaper in Geneva by 20 pounds.
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