If the two lengths are 7 and 3, then I believe the length of the hypotenuse would be approximately 7.62.


You have

for all

, and dividing by

gives

, or

. By the racetrack principle, then, it follows that

.
The best thing to do is to divide 78 by 100, and then multiply this by 9.5
78/100= 0.78. 0.78x9.5=7.41
You've then got to add 7.41 to 78, and this gives you 85.41
Hope this helps :)
Okay act like 6:8 is 6/8 you could either simplify the fraction or multiply to make it bigger
3:4 (divide by 2)
12:16 (multiply by 2)
18:24 (multiply by 3)
24:32 (multiply by 4)
Y is 15 :)
Explanation:
If you divide 3/2, you get 1.5. 15/10 is also get 1.5
Another way of doing this is by cross multiplying. Multiply 3 by 10 to get 30 on the right side of the equation. Multiply 2 by y to get 2y. Then divide both sides by 2 and you get y = 15.