The scale of a model airplane is 1: 72. if the wingspan on the model airplane is 7 1/2 inches, then the actual wingspan is 540 feet 72 feet 45 feet 9.6 feet

45 feet

Step-by-step explanation:

You multiply 72 by 17½ to get 540, then divide that measurement by 12 inches to get 45 feet.

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answer: a.   one is a factor of every whole number since every number is divisible by itself.

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2