4. To estimate the height of a tree, Adele waited until the tops of the shadows of the tree and the sign coincided. The sign and the tree have shadows of 6.4 meters and 15.8
meters, respectively with the sign height being 2 meters. Find the height of the tree to
the nearest tenth.

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

3, 12, 48, 384, 1536, 6144, 24576, 98304

step-by-step explanation:

just keep timing it by 4.

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: