Cathy ran for 30 minutes at a rate of 5.5 mi/h. then she ran for 15 minutes at a rate of 6mi/h. how many miles did she run in all ?

30 minutes is a half an  hour

 so 5.5/2 = 2.75 miles ran

 15 minutes is a quarter of an hour

6/4 = 1.5 miles ran

2.75 + 1.5 = 4.25 miles total

the aswere is the one with all 8's and the second one is with the 10,8 and 6

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