The mass of the part of a metal rod that lies between its left end and a point x meters to the right is 2x2 kg. (See this example.) (a) Find the linear density when x is 2 m.
kg/m

(b) Find the linear density when x is 8 m.
kg/m

(c) Find the linear density when x is 9 m.
kg/m

Where is the density the highest?
At the right end of the rod.
At the left end of the rod.
In the middle of the rod.

Where is the density the lowest?
At the right end of the rod.
At the left end of the rod.
In the middle of the rod.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have

step-by-step explanation:

use context clues to figure out the meaning of the bolded word:  

the sage gardener knew when she had to water her plants.  

question 8 options:

mint plant

wise

happy

lazy

5 quiero

6 vamos

7 puedan

8 quiero

9pedemos

10 dorme

step-by-step explanation: