Mary bought a shirt on sale for $15.00.the sales tax was 10%.mary paid with a $20 bill, what is her change?

$3.5

Step-by-step explanation:

Adding 10% to a number is the same as multiplying it by 1.1

To find $15 with 10% sales tax, the equation is 15 * 1.1 = 16.5.

Mary's change will be the $20 bill minus the price of the item, which is the equation 20 - 16.5 = 3.5.

$3.5

Step-by-step explanation:

15.00 times 10 divided by 100 equals $1.5 which is the sales tax. $15 plus $1.5 equals $16.5. $20 minus $16.5 equals to $3.5.

false

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.