The table shows the number of words Marla can type in a given time. Time
(minutes)
Number of
Words

5 | 140
10 | 280
15 | 420
20 | 60

What is Maria's typing rate?
A. 21 words per minute
B. 28 words per minute
C. 84 words per minute
O D. 140 words per minute

chicken chicken chicken

step-by-step explanation:

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