If you are a expert or higher I beg of you but if not please help all you can Please help I will give brainliest only to those who answer respectfully and the best answer

I need a topic on standard deviation, I'm supposed to be teaching first graders how to do standard deviation I just dont have a topic that would relate to them, could you please give me one?

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}

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

answer: im sorry i dont get it

step-by-step explanation: