Tela A: Compro $/720 de mercancía y le realizaron el 12% de descuento. ¿Cuanto dinero pagó María por la tela A?

the amount that need to be paid by her is $633.60

Step-by-step explanation:

The computation of the amount that need to be paid by her is shown below:

= Purchase value of merchandise - purchase value fo merchandise × discount rate

= $720 - $720 × 12%

= $720 - $86.4

= $633.60

hence, the amount that need to be paid by her is $633.60

congruent segments

step-by-step explanation:

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional