William is building a scale model of a boeing 747-400 aircraft. the wingspan of the model
is approximately 8 feet inches. if the scale
factor of the model is approximately 1: 24, what is the actual wingspan of a boeing 747-400 aircraft?

212 ft  

Step-by-step explanation:

I am assuming that the wingspan of William's model is 8 ft 10 in.

If the scale is 1:24, then  

model/real = 1/24

Multiply each side by real:     model = real/24

Multiply each side by 24:           real = 24 × model

                                                    real = 24 × (8 ft 10 in)

Convert inches to feet:              real = 24 × (8 ft + ¹⁰/₁₂ ft)

Distribute the 24:                        real = 24 × 8 ft + 24 × ¹⁰/₁₂ ft

                                                    real = 192 ft + 20 ft

                                                    real = 212 ft

The actual wingspan of a Boeing 747-400 aircraft is approximately 212 ft.

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