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N e E d H e L p.

1. A historian is building a model of a famous steamboat using the scale shown in the table. If the length of the model is 32 inches, what was the actual length of the steamboat, in feet? 1 inch = 11 feet.


2. Peanuts cost $0.21 per ounce. How much will a 2.25 pound bag of peanuts cost?


3. Given 1 in = 2.54 cm and 1 cm = 10 mm, how many millimeters are present in 20.0 inches? Use dimensional (unit) analysis to find your answer.

Respuesta :

sqdancefan

Answer:

  1. 352 ft
  2. $7.56
  3. 508 mm

Step-by-step explanation:

1. Starting with the equation ...

  1 in = 11 ft

You can multiply both sides by 32 to get the answer to your question:

  32 in = 352 ft

The actual length of the steamboat was 352 feet.

__

2. There are 16 ounces in a pound, so the cost is ...

  $0.21/oz × 16 oz/lb × 2.25 lb = $(0.21×16×2.25) = $7.56

A 2.25 lb bag of peanuts will cost $7.56.

__

3. Using the given conversion factors, we have ...

  (20 in) × (2.54 cm/in) × (10 mm/cm) = (20×2.54×10) mm = 508 mm

There are 508 mm present in 20.0 inches.

wilsonjim639

Answer:

352 ft

$7.56

508 mm

Step-by-step explanation:

1. Starting with the equation ...

 1 in = 11 ft

You can multiply both sides by 32 to get the answer to your question:

 32 in = 352 ft

The actual length of the steamboat was 352 feet.

__

2. There are 16 ounces in a pound, so the cost is ...

 $0.21/oz × 16 oz/lb × 2.25 lb = $(0.21×16×2.25) = $7.56

A 2.25 lb bag of peanuts will cost $7.56.

__

3. Using the given conversion factors, we have ...

 (20 in) × (2.54 cm/in) × (10 mm/cm) = (20×2.54×10) mm = 508 mm

There are 508 mm present in 20.0 inches.

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