A normal distribution has a mean of 13 and a standard deviation of 4. What percent of values are from 13 to 21​?

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

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2

what is the answer to this