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?

Fill in the Blank

What the measure of complementary angles?

Multiple Choice

How can we find the measure of each angle?

• $3x+7x=180$

• 
  

  $3x+7x=90$
  

Fill in the Blank

What is the value of X?

Fill in the Blank

What's the measure of the smaller angle?

Fill in the Blank

What is the measure of larger angle?

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 Blank

What's the value of X?

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 Blank

What's the value of X?

HW : 7.2 Lesson (In Canvas)

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