It took Carla 36 minutes to run four miles. Convert this ratio into a unit rate by finding how long it took Carla to run one mile.(1 point)
Responses
19 minutes/mile
one-ninth minutes/mile
9 minutes/mile
9 minutes/mile
9 miles/minute
9 miles/minute
19 miles/minute
The correct response is 9 minutes/mile.
To convert the given ratio into a unit rate, we need to find how long it took Carla to run one mile.
To do this, we divide the time it took Carla to run the given distance by the number of miles.
Given that Carla took 36 minutes to run 4 miles, we divide 36 by 4:
36 minutes / 4 miles = 9 minutes/mile.
Therefore, the correct unit rate is 9 minutes/mile.
To convert the ratio into a unit rate, we divide the total time (36 minutes) by the number of miles (4).
So, Carla took 36 minutes ÷ 4 miles = 9 minutes/mile.
Therefore, the correct answer is 9 minutes/mile.
Find Unit Rates Quick Check
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Question
At a used book sale, Miss Chen bought a box of 20 assorted books for $40. What was the cost per book?(1 point)
Responses
$0.50/book
$0.50/book
2 books/$1.00
2 books/$1.00
$2.00/book
$2.00/book
0.5 books/$1.00
To find the cost per book, we need to divide the total cost ($40) by the number of books (20).
Therefore, the cost per book is $40 ÷ 20 = $2.00/book.
So, the correct response is $2.00/book.
It took Liam 15 minutes to ride his bike three miles. Convert this ratio into a unit rate by finding how long many minutes did he take to travel one mile.(1 point)
Responses
15 minutes/mile
one-fifth minutes/mile
15 miles/minute
one-fifth miles/minute
5 miles/minute
5 miles/minute
5 minutes/mile
To convert the given ratio into a unit rate, we divide the total time (15 minutes) by the number of miles (3).
So, Liam took 15 minutes ÷ 3 miles = 5 minutes/mile.
Therefore, the correct unit rate is 5 minutes/mile.
At Office Mart, a box of 10 ballpoint pens costs $8. What is the unit price?(1 point)
Responses
0.80 pens/$1
0.80 pens/$1
$0.80/pen
$0.80/pen
1.25 pens/$1
1.25 pens/$1
$1.25/pen
To find the unit price, we need to divide the total cost ($8) by the number of pens (10).
Therefore, the unit price is $8 ÷ 10 = $0.80/pen.
So, the correct response is $0.80/pen.
For a Thanksgiving food drive, volunteers packed 50 boxes of food in 20 minutes. How many boxes did they pack per minute?(1 point)
Responses
0.4 minutes/box
0.4 minutes/box
2.5 minutes/box
2.5 minutes/box
0.4 boxes/minute
0.4 boxes/minute
2.5 boxes/minute
To find the number of boxes packed per minute, we need to divide the total number of boxes (50) by the time in minutes (20).
Therefore, the number of boxes packed per minute is 50 ÷ 20 = 2.5 boxes/minute.
So, the correct response is 2.5 boxes/minute.
What do earthquakes and tsunamis have in common?(1 point)
Responses
They only occur in the ocean.
They only occur in the ocean.
They only occur on landmasses.
They only occur on landmasses.
They originate on Earth’s surface.
They originate on Earth’s surface.
They modify Earth’s surface.
The correct response is: They originate on Earth’s surface.
Which describes the waves formed by tsunamis?(1 point)
Responses
They cause small waves in the open ocean, but large ones near the shore.
They cause small waves in the open ocean, but large ones near the shore.
They cause large waves in the open ocean, but small ones near the shore.
They cause large waves in the open ocean, but small ones near the shore.
They cause small waves both in the open ocean and near the shore.
The correct response is: They cause large waves in the open ocean, but small ones near the shore.
Which correctly identifies ways that earthquakes and tsunamis can cause destruction?(1 point)
Responses
earthquakes: landslides
tsunamis: move blocks of land up or down
earthquakes: landslides tsunamis: move blocks of land up or down
earthquakes: erosion of beaches
tsunamis: move blocks of land up or down
earthquakes: erosion of beaches tsunamis: move blocks of land up or down
earthquakes: open up large cracks in Earth’s crust
tsunamis: erosion of beaches
earthquakes: open up large cracks in Earth’s crust tsunamis: erosion of beaches
earthquakes: landslides
tsunamis: open up large cracks in Earth’s crust
earthquakes: landslides tsunamis: open up large cracks in Earth’s crust
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The correct response is: earthquakes: landslides tsunamis: move blocks of land up or down.
Which describes the waves formed by tsunamis?(1 point)
Responses
They cause small waves in the open ocean, but large ones near the shore.
They cause small waves in the open ocean, but large ones near the shore.
They cause large waves in the open ocean, but small ones near the shore.
They cause large waves in the open ocean, but small ones near the shore.
They cause small waves both in the open ocean and near the shore.
They cause small waves both in the open ocean and near the shore.
They cause large waves both in the open ocean and near the shore.
They cause large waves both in the open ocean and near the shore.
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I apologize for the confusion. The correct response is: They cause small waves in the open ocean, but large ones near the shore.
Earthquakes and Tsunamis Quick Check
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Question
Which correctly identifies ways that earthquakes and tsunamis can cause destruction?(1 point)
Responses
earthquakes: landslides
tsunamis: move blocks of land up or down
earthquakes: landslides tsunamis: move blocks of land up or down
earthquakes: erosion of beaches
tsunamis: move blocks of land up or down
earthquakes: erosion of beaches tsunamis: move blocks of land up or down
earthquakes: open up large cracks in Earth’s crust
tsunamis: erosion of beaches
earthquakes: open up large cracks in Earth’s crust tsunamis: erosion of beaches
earthquakes: landslides
tsunamis: open up large cracks in Earth’s crust
earthquakes: landslides tsunamis: open up large cracks in Earth’s crust