Riley has a loyalty card good for a 12% discount at her local pharmacy. What would her total in dollars and cents be, after the discount and before tax, if the total cost of
all the items she wants to buy is $17.50? Round to the nearest cent.

The cost after discount would be $15.40

Step-by-step explanation:

Given that:

Discount card = 12%

Cost of items bought = $17.50

Amount of discount = 12% of 17.50

Amount of discount =

Amount of discount = 0.12 * 17.50

Amount of discount = $2.10

Cost after discount = 17.50 - 2.10

Cost after discount = $15.40

Hence,

The cost after discount would be $15.40

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.