Find the missing link x=_ I am stuck on all of these.

Step-by-step explanation:

1. x = ✓64*(289-64)=8✓225=8*15=120

2.x=✓144*25=12*5=60

3.x/56=90/36, x/56=5/2, x=56*5/2=28*5

4.21/15=36/x, x=15*36/21

5.x=✓225*64=15*8=120

squares, rhombus, rectangles

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5