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2 years ago

There are 5280 feet in 1 mile. how many feet are in 3.5 miles?

Mathematics

2 answers:

Aleksandr [31]2 years ago

8 0

Answer:18480 miles in 1 mile

Step-by-step explanation:

Make a proportion: 1/5280=3.5/x

Cross Multiply: 1x=18480=(5280*3.5)

Divide: 18480 and 1.

worty [1.4K]2 years ago

5 0

Answer:

18,480

Step-by-step explanation:

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2 years ago

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saw5 [17]

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2 years ago

If F (7) 22, Then F(f-1(22))

jeka57 [31]

Answer:

$\boxed{\boxed{f(f^{-1}(22))=22}}$

Step-by-step explanation:

$\text{If we have}\ f(x)\ \text{and}\ f^{-1}(x),\ \text{then}\\\\\text{if}\ f(a)=b,\ \text{then}\ f^{-1}(b)=a.\\\\\text{Therefore, if}\ f(7)=22,\ \text{then}\ f^{-1}(22)=7.\\\\f(\underbrace{f^{-1}(22)}_{=7})=f(7)=22$

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