A rectangle is reduced by a scale factor of One-fourth.


A large rectangle has a length of 16 and width of 12. A smaller rectangle has length of 4 and width of 3.


Which choices show the ratio of the area of the smaller rectangle to the area of the larger rectangle? Select three options.

a. 4 / 16

b. 4 / 16 squared

c. 12 / 192

d. 4 squared / 12 squared

e. 3 / 12 squared

Respuesta :

Answer:

[tex](\frac{4}{16})^2[/tex]

[tex]\frac{12}{192}[/tex]

[tex](\frac{3}{12})^2[/tex]

Step-by-step explanation:

we know that

If two figures are similar, the the ratio of its areas is equal to the scale factor squared

In this problem

The scale factor is 1/4

Let

z ---> the scale factor

x ---> the area of the smaller rectangle

y ---> the area of the large rectangle

so

[tex]z^2=\frac{x}{y}[/tex]

we have

[tex]z=\frac{1}{4}[/tex]

substitute

[tex]z^2=(\frac{1}{4})^2 =\frac{1}{16}[/tex]

Verify each option

a) we have

[tex]\frac{4}{16}[/tex]

Compare with  [tex]\frac{1}{16}[/tex]

so

[tex]\frac{4}{16} \neq \frac{1}{16}[/tex]

This option no show the ratio of the area of the smaller rectangle to the area of the larger rectangle

b) we have

[tex](\frac{4}{16})^2=\frac{16}{256}=\frac{1}{16}[/tex]

Compare with  [tex]\frac{1}{16}[/tex]

so

[tex]\frac{1}{16} = \frac{1}{16}[/tex]

This option show the ratio of the area of the smaller rectangle to the area of the larger rectangle

c) we have

[tex]\frac{12}{192}=\frac{1}{16}[/tex]

Compare with  [tex]\frac{1}{16}[/tex]

so

[tex]\frac{1}{16} = \frac{1}{16}[/tex]

This option show the ratio of the area of the smaller rectangle to the area of the larger rectangle

d) we have

[tex](\frac{4}{12})^2=\frac{16}{144}=\frac{1}{9}[/tex]

Compare with  [tex]\frac{1}{16}[/tex]

so

[tex]\frac{1}{9} \neq \frac{1}{16}[/tex]

This option no show the ratio of the area of the smaller rectangle to the area of the larger rectangle

e) we have

[tex](\frac{3}{12})^2=\frac{9}{144}=\frac{1}{16}[/tex]

Compare with  [tex]\frac{1}{16}[/tex]

so

[tex]\frac{1}{16} = \frac{1}{16}[/tex]

This option show the ratio of the area of the smaller rectangle to the area of the larger rectangle

Answer:

4/16

12/192

3/12 squared

explanation:

i took the test and have all a's

Q&A Education