Nicole has 18 nickels n and dimes d. If the value of her coins is $1.45, how many of each coin does she have?

Achel bought 12 rolls of packing tape and paid a total of $33.60. kevin also bought rolls of packing tape. the table shows the total amount he is paid for different numbers of packing tape. number of rolls of packing tape total amount paid 2 $6.40 5 $16.00 8 $25.60 how do the unit rates compare? select from the drop-down menus to correctly complete the statement. rachel's unit rate is than kevin's because is greater than .

Need on this geometry question. explain how you did it.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16