1a:
580 - (580 × .1) - 20
580 - (58) - 20
522 - 20
502
1b:
990 - (990 × .25) - 20
990 - (247.5) - 20
742.5 - 20
722.5
I'm not sure how to solve #2.
The scale given (1 in : 1/2 ft) implies that 1 inch on the model is equal to 1/2 foot on the actual ship. Therefore, we can multiply the two inch values by 1/2 foot to find the true dimensions of the ship in feet. Starting with 28 inches:
28 × (1/2 ft) = 14 ft
28 inches is proportional to 14 feet. Now calculate 65 inches:
65 × (1/2 ft) = 32.5 ft
65 inches is proportional to 32.5 feet. Therefore, the answer to this problem is:
D) 14 ft. by 32 1/2 ft.
I hope this helps!
Answer:
D
Step-by-step explanation:
correct
Answer: 9.1
Step-by-step explanation:
Add all of the numbers up and divide by 8