Factorial – is the product of natural numbers, for example: 5! = (5)(4)(3)(2)(1) = 120

Simplify the following expression:

1) 11! 2) 15! 3) 20!

8!(7-3)! 10!(9-5)! 13!
please answer for me!!

60

step-by-step explanation:

step-by-step explanation:

cats

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

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.