A department store gives away a $10 gift card to every 20th customer and a $15 gift card to every 45th customer. a. Which customer will be the first to receive bbth gift cards? Customer
b. After this customer receives both gift cards, what is the total amount in gift cards that the store has given away?

The LCM(20, 45) = 180. So, it will be the 180th customer who will receive both gift cards. 180 / 20 = 9 - $10 gift cards were given away.

Step-by-step explanation:

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.