Find the critical value x2r corresponding to a sample size of 15 and a confidence level of 90

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!

you would have to sell 24 bracelets.

step-by-step explanation:

84/3.5 = 24

1/800 is the right answer

c. side angle side. u shares the same sides