Zane calculated the missing side length of one of these triangles using the Pythagorean Theorem. Which triangle is it? (4 points) Four triangles are shown. Triangle A has sides marked 4 and 5. Triangle B has sides marked 2 and 4 and a right angle marked in between them. Triangle C has three equal sides, and two sides are marked 4 and 4. Triangle D has sides marked 3 and 5. Group of answer choices A B C D

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

add an image !

step-by-step explanation:

pretty sure 750 each month!

step-by-step explanation: