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Lerok [7]
4 years ago
12

Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at 90

Mathematics
1 answer:
Bogdan [553]4 years ago
3 0

x = # of hours

80x + 90x = 408

Combine like terms.

170x = 408

Divide both sides by 408

x = 2.4 hours

It will take the trains 2.4 hours to be 408 miles apart.

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A square dance floor has a perimeter of 120 yards. What is the length of a diagonal of the dance floor?
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Answer:

Hey!

Your answer is C.42.4yd

Step-by-step explanation:

There are 2 ways you can work this on out...

1. Using Pythagoras Theorem...

= 30^2 + 30^2 = 1,800 (30^2=900 so you've added 2 of those to make 1,800)

= SQUARE ROOT THE ANSWER OF 1,800

\sqrt{x} 1,800= 42.42640687119285‬

TO GET A MORE PRECISE ANSWER WE ROUND IT UP TO 1 decimal place

= 42.4 yd is the diagonal length of the dance floor!!

HOPE THIS HELPS!!

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Step-by-step explanation:

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