We want to find one-half of the reciprocal of 7/sqrt(98). Let's write down an expression for this:

We can rewrite 98 into 


The square root of 49 is 7



This should be your answer. Let me know if you need any clarifications, thanks!
Answer:
At its top floor, the Empire State Building stands <u>1,250 feet (380 meters)</u> tall. Counting the spire and antenna, the building clocks in at a mighty 1,454 feet (443 meters).
Multiply 120 times .7 because you just Turn the percent into a decimal
You will have to get the difference and get a common denominator but first combine the mixed number:

Then subtract the numbers

Angel took 5/12 hours longer than Chris