4 hours? i may be wrong
i did - 60 * 15
seems about right, since 50% would be 7.5 hours?
20% * 300 = 2 * (10% * 300) = 2*30 = 60
Don't know about the TV problem, sorry.
For the next one (Dylan) = 14.1 inches
Use the Pythagorean Theorem a^2+b^2 = c^2
10^2 + 10^2 = c^2
100 + 100 = c^2
200 = c^2
Take the square root of both sides. The hypotenuse is equal to the square root of 200, which is 14.1 when rounded to the nearest tenth of an inch.
Hope this helps
What are the "all of these" , we need more information please.