What is 3*5/2 a.5/6 b.15/2 c.8/2 d.15/6

B) 15/2

Step-by-step explanation:

Step 1: Create the problem. 3 is a whole number, so the denominator is 1. When created, the problem would be 3/1 * 5/2.

Step 2: Multiply straight across. In other words, mulitply the numerators together and the denominators together. 3 * 5 is 15. 2 * 1 is 2. 15/2 is the product of the problem.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4