Describe three ways to write the ratio that compares 4 electronic devices for every 3 people.(1 point)
Responses
3 to 4, 3:4, 34
3 to 4, ratio of 3 to 4 , Start fraction 3 over 4 end fraction
4 to 3, 3:4, 43
4 to 3, ratio of 3 to 4 , Start fraction 4 over 3 end fraction
4 to 3, 4:3, 34
4 to 3, ratio of 4 to 3 , Start fraction 3 over 4 end fraction
4 to 3, 4:3, 43
19 answers
4 to 3, ratio of 4 to 3, Start fraction 4 over 3 end fraction
How do you write 5 is to 1 as 20 is to 4 as a proportion in fractional notation?(1 point)
Responses
51=420
start fraction 5 over 1 end fraction equals start fraction 4 over 20 end fraction
5:1 :: 20:4
ratio of 5 to 1 colon colon ratio of 20 to 4
51=204
start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction
54=120
Responses
51=420
start fraction 5 over 1 end fraction equals start fraction 4 over 20 end fraction
5:1 :: 20:4
ratio of 5 to 1 colon colon ratio of 20 to 4
51=204
start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction
54=120
start fraction 5 over 1 end fraction equals start fraction 20 over 4 end fraction
You fill your car with 15 gallons of gas at a cost of $45. Using fractional notation, how do you write a proportion that shows how much 5 gallons of gas will cost? Use x to represent the unknown cost.(1 point)
Responses
1545=x5
Start Fraction 15 over 45 End Fraction equals Start Fraction x over 5 End Fraction
15x=455
Start Fraction 15 over x End Fraction equals Start Fraction 45 over 5 End Fraction
1545=5x
Start Fraction 15 over 45 End Fraction equals Start Fraction 5 over x End Fraction
15:45::x:5
Responses
1545=x5
Start Fraction 15 over 45 End Fraction equals Start Fraction x over 5 End Fraction
15x=455
Start Fraction 15 over x End Fraction equals Start Fraction 45 over 5 End Fraction
1545=5x
Start Fraction 15 over 45 End Fraction equals Start Fraction 5 over x End Fraction
15:45::x:5
Start Fraction 15 over 45 End Fraction equals Start Fraction x over 5 End Fraction
Determine if 2.5/10=?12/48 or 2.52=?12/24 is a proportion.(1 point)
Responses
Both are proportions.
Both are proportions.
Neither is a proportion.
Neither is a proportion.
2.510=1248
Start Fraction 2.5 over 10 End Fraction equals Start Fraction 12 over 48 End Fraction
2.52=1224
Responses
Both are proportions.
Both are proportions.
Neither is a proportion.
Neither is a proportion.
2.510=1248
Start Fraction 2.5 over 10 End Fraction equals Start Fraction 12 over 48 End Fraction
2.52=1224
Neither is a proportion.
Determine if one, both, or neither of the following is a proportion. 168=?2412, 84=?126(1 point)
Responses
168=2412 only
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction only
Neither is a proportion.
Neither is a proportion.
168=2412, 84=126
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction , Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction
84=126 only
Responses
168=2412 only
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction only
Neither is a proportion.
Neither is a proportion.
168=2412, 84=126
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction , Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction
84=126 only
Neither is a proportion.
Determine if one, both, or neither of the following is a proportion. 168=?2412, 84=?126(1 point)
Responses
168=2412 only
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction only
Neither is a proportion.
Neither is a proportion.
168=2412, 84=126
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction , Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction
8/4=12/6 only
Responses
168=2412 only
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction only
Neither is a proportion.
Neither is a proportion.
168=2412, 84=126
Start Fraction 16 over 8 End Fraction equals Start Fraction 24 over 12 End Fraction , Start Fraction 8 over 4 End Fraction equals Start Fraction 12 over 6 End Fraction
8/4=12/6 only
Neither is a proportion.
You place ice cream on a metal surface that is at a room temperature of 25 degrees Celsius. Which will happen when the ice cream and metal surface interact?(1 point)
Responses
Heat is transferred from the ice cream to the air, and the ice cream melts.
Heat is transferred from the ice cream to the air, and the ice cream melts.
Heat is transferred from the ice cream to the metal surface, and the ice cream melts.
Heat is transferred from the ice cream to the metal surface, and the ice cream melts.
Heat is transferred from the ice cream and metal surface to the air, and the ice cream melts.
Heat is transferred from the ice cream and metal surface to the air, and the ice cream melts.
Heat is transferred from the metal surface to the ice cream, and the ice cream melts.
Responses
Heat is transferred from the ice cream to the air, and the ice cream melts.
Heat is transferred from the ice cream to the air, and the ice cream melts.
Heat is transferred from the ice cream to the metal surface, and the ice cream melts.
Heat is transferred from the ice cream to the metal surface, and the ice cream melts.
Heat is transferred from the ice cream and metal surface to the air, and the ice cream melts.
Heat is transferred from the ice cream and metal surface to the air, and the ice cream melts.
Heat is transferred from the metal surface to the ice cream, and the ice cream melts.
Heat is transferred from the ice cream to the metal surface, and the ice cream melts.
An iron block with a temperature of 50 degrees Celsius is placed into a container of water with a temperature of 25 degrees Celsius. Which statement best describes what will be observed in this experiment?
(1 point)
Responses
Heat will flow from the iron block to the water until both are 50 degrees Celsius.
Heat will flow from the iron block to the water until both are 50 degrees Celsius.
Heat will flow from the water to the iron block until both are at the temperature of the container.
Heat will flow from the water to the iron block until both are at the temperature of the container.
Heat will flow from the iron block to the water until both are 25 degrees Celsius.
Heat will flow from the iron block to the water until both are 25 degrees Celsius.
Heat will flow from the iron block to the block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
Heat will flow from the iron block to the block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
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(1 point)
Responses
Heat will flow from the iron block to the water until both are 50 degrees Celsius.
Heat will flow from the iron block to the water until both are 50 degrees Celsius.
Heat will flow from the water to the iron block until both are at the temperature of the container.
Heat will flow from the water to the iron block until both are at the temperature of the container.
Heat will flow from the iron block to the water until both are 25 degrees Celsius.
Heat will flow from the iron block to the water until both are 25 degrees Celsius.
Heat will flow from the iron block to the block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
Heat will flow from the iron block to the block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
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Heat will flow from the iron block to the water until both reach a temperature somewhere between 50 degrees Celsius and 25 degrees Celsius.
A student drops substance A into substance B. What will happen?(1 point)
Responses
Both substances will reach 25 degrees Celsius due to heat exchange.
Both substances will reach 25 degrees Celsius due to heat exchange.
After some time passes, the substances will reach the same temperature.
After some time passes, the substances will reach the same temperature.
Both substances will reach 50 degrees Celsius due to heat exchange.
Both substances will reach 50 degrees Celsius due to heat exchange.
Substance A will become warmer as heat flows from substance A to substance B.
Responses
Both substances will reach 25 degrees Celsius due to heat exchange.
Both substances will reach 25 degrees Celsius due to heat exchange.
After some time passes, the substances will reach the same temperature.
After some time passes, the substances will reach the same temperature.
Both substances will reach 50 degrees Celsius due to heat exchange.
Both substances will reach 50 degrees Celsius due to heat exchange.
Substance A will become warmer as heat flows from substance A to substance B.
Substance A will become warmer as heat flows from substance A to substance B.
When you add cold milk and hot chocolate, they will slowly blend as the cooler liquid mixes with the warmer liquid. Eventually, the heat will be spread out evenly through the entire liquid. Which statement best explains why this happens?(1 point)
Responses
The molecules of the two liquids form chemical bonds to spread energy.
The molecules of the two liquids form chemical bonds to spread energy.
Heat always moves from areas of higher temperature to areas of lower temperature.
Heat always moves from areas of higher temperature to areas of lower temperature.
Cold liquids rise and hot liquids sink making the liquids mix.
Cold liquids rise and hot liquids sink making the liquids mix.
The liquids attract each other because the densities of the liquids are the same.
The liquids attract each other because the densities of the liquids are the same.
Responses
The molecules of the two liquids form chemical bonds to spread energy.
The molecules of the two liquids form chemical bonds to spread energy.
Heat always moves from areas of higher temperature to areas of lower temperature.
Heat always moves from areas of higher temperature to areas of lower temperature.
Cold liquids rise and hot liquids sink making the liquids mix.
Cold liquids rise and hot liquids sink making the liquids mix.
The liquids attract each other because the densities of the liquids are the same.
The liquids attract each other because the densities of the liquids are the same.
Heat always moves from areas of higher temperature to areas of lower temperature.