7.1 Ratios and Proportions

7.1 Ratios and Proportions

Get out your notes & be ready to go by the bell

DID YOU DO YOUR HOMEWORK?

We are about to find out!

Multiple Select

What is a ratio?

• $R:T:C$

• A comparison of two quantities using division, usually expressed in simplest form.

• can be shown as
  

  $F\ to\ D$

• can be shown as
  $\frac{t}{x}$
  

• Used to compare three or more quantities.

Multiple Select

What is an Extended Ratio?

• Used to compare three or more quantities.

• $T:P:E$

• ED=LP

• A comparison of two quantities using division, usually expressed in simplest form.

• can be shown as $X\ to\ Y$

Multiple Choice

A music store has 40 trumpets, 39 clarinets, 24 violins, 51 flutes, and 16 trombones in stock.

What is the ratio of trombones to trumpets?

• $\frac{39}{51}$

• 16 to 40

• $\frac{16}{40}$

• 
  

  $\frac{40}{16}$
  

• $2\ :\ 5$

Multiple Select

A music store has 40 trumpets, 39 clarinets, 24 violins, 51 flutes, and 16 trombones in stock.

What's the ratio to of flutes to total instruments.

• 3 to 10
  

• 51:39:40

• 51 to 170

• 10:3

• $\frac{3}{10}$

completed on hw, but any questions?

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Multiple Choice

How can we find the measure of each angle?

• $3x+7x=180$

• 
  

  $3x+7x=90$
  

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Multiple Select

what is the cross multiplication property of:

 $\frac{4}{x}=\frac{6}{21}$  

•  $24=21x$  

•  $6x=84$  

•  $4x=126$  

•  $4\left(21\right)=6x$  

Fill in the Blanks

completed on hw, but any questions?

Multiple Select

What is the cross multiplication property of:

 $\frac{12}{18}=\frac{3x+4}{15}$  

•  $180=54x+72$  

•  $10=4x\left(x+3\right)$  

•  $a=b$  

•  $18\left(3x+4\right)=15\left(12\right)$  

Fill in the Blanks

HW : 7.2 Lesson (In Canvas)

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