(a) Annelise buys a car that is one year old for $13 600. The value of this car has reduced by 15% of the value when it was new.

(ii) After the first year the car reduces in value by 11% each year for the next 3 years.
Calculate the value of the car after these 3 years.

(b) Boris buys a car for $23000.
The value of this car reduces by 8% each year.
Find the number of complete years it takes for the value of the car to fall below $11 500.

On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.