david study table is 20 inches long. if the diagonal measures 25 inches, find the width of david study table

15

Step-by-step explanation:

You can use Pythagorean theorem or if you draw it out and label the given information you may recognize that the triangle created is a 3 - 4 - 5 triangle.

= +             = +

625 = 400 +        

225 =                     Square root both sides

15 = x

A special right triangle has a leg that measures 3, another leg that measures 4. and a hypotenuse that measures 5.

The given triangle in this problem has a leg that measures 20 and a hypotenuse that measures 25. If you divide each measure by 5, you will have a leg that is 4, and a hypotenuse that is 5. That means the last leg must be 15.

Why? Because 3 x 5 = 15. or 15/5 = 3

This comes up very often when working with triangles.

step-by-step explanation:

subtract 7, so the answer is x < = 3, or c.

22 dimes and 9 nickels

step-by-step explanation: