Two owners of a cattle ranch, Robert and Val, want to find the average weight for the ranch’s 200 cows. Instead of weighing all of the cows:Robert weighs 25 cows and gets an average weight of 1,550 pounds (stdev = 50)Val weighs 100 cows and gets an average weight of 1,380 pounds (stdev = 50)What is Val’s margin of error, rounded to the nearest whole number? (The formula is 1.96 (std dev) / square root of N

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24

d

step-by-step explanation:

i used the pitagoras theoreme