ANSWERED

check all of the temperatures that are within one standard deviation of the mean. 72°

-74

-79

how many years had temperatures that were exactly one standard deviation from the mean

-6

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation:

y=mx+b

step-by-step explanation:

m slope, b y-intercept

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

i would say b) is your answer

sorry if im wrong

step-by-step explanation: