The temperature is 78 °f at 2: 00 in the afternoon. if the temperature drops 4 °f every hour after that, what is the temperature at 8: 00 in the evening?

The answer to your question is: 54°F

Step-by-step explanation:

Data

Ti = 78°F

Initial hour = 2:00

Temperature drops 4°F every hour

Temperature at 8:00 = ?

Process

                      2:00                  

                       3:00             78-4 =     74°F

                      4:00              74-4 =      70°F

                      5:00              70-4 =      66°F

                      6:00              66-4 =      62°F

                       7:00             62-4 =     58°F

                      8:00              58-4 =      54°F

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