calculate the number of litres of petrol required for this trip, if the car has a petrol consumption of 7.5 L per 100 km and the cost of petrol is 2.64 rupees per litre. Jolie's mum thinks it should cost 5 rupees. verify using calculations if this is correct​

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Describe how you can act financially responsible.

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.