Two populations of bacteria were given food treated with different vitamins to see how they would grow. Population A started with 900 bacteria and grew at a steady rate of 30 bacteria each hour, while Population B started with 450 bacteria and grew at a steady rate of 9% each hour.

At what hour will Population B be larger than Population A?

Select your answer from the choices below.

A. hour 10

B. hour 9

C. hour 12

D. hour 11

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

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.

-1

step-by-step explanation: