Question

The students in Roberto's school are painting a mural that will be 15 feet by 8 feet. First they make a scale drawing of the mural with a scale of 2 feet : 5 feet.
Part A
Write an equation for the proportional relationship between the drawing's lengths c in feet and the actual mural's lengths y in feet.

Part C
Which of the following scales could be used to make a scale drawing of the mural that will fit on a piece of graph paper?

Explain please! Thanks!​

Answer 1

Answer:

Follows are the solution to this question:

Step-by-step explanation:

In point A:

The two-point C and y is given, where C is the scale drawing lengths  and y is the actual mural lengths so, the formed equation is:  

$\to \frac{c}{y}=\frac{2}{5}$

In point C :

Using the value of the scale:

let  1 feet: 20 feet

therefore the equation is:

$\to \frac{c}{y}=\frac{1}{20}$

The size of c will be the length of:

$\to c= \frac{y}{20}\\\\\to c= \frac{8}{20}\\\\\to c= 0.4$

The diagram c scale width will be:

$\to c= \frac{y}{20}\\\\\to c= \frac{15}{20}\\\\\to c= 0.75$