go study baka

Convert fraction to a decimal

⁶/₁₅

14 tenths - 5 tenths

Angle is...

• a characteristic or feature of an item

• a plane containing a x and y axis

• part of a group

• distance between two rays that share an endpoint

A group of students did an investigation in which they dissolved different samples of sugar in different beakers of water. The table shows the data (temperature and time to dissolve) from their investigation.

Which of the following is best supported by the data?

• Different sizes of sugar will dissolve at different rates.

• Different samples of sugar will dissolve at different rates.

• Sugar will dissolve slower when the temperature of the water is higher.

• Sugar will dissolve faster when the temperature of the water is higher.

While investigating how solids dissolve, students measured how long it takes for sugar cubes to dissolve in water compared to the same mass of sugar grains. Their data show that it took 15 minutes for three sugar cubes (mass = 12.6 grams) to dissolve completely in water and 9 minutes for the three teaspoons of sugar grains (mass = 12.6 grams) to dissolve completely in water.

Which of the following conclusions is the best explanation for this?

• Sugar cubes are made from different types of sugar.

• Larger pieces of sugar take longer to dissolve than smaller pieces.

• The teaspoons were used to stir the sugar grains faster.

• Something was binding the sugar cubes together that took longer to dissolve.

What is the difference between

3,012.87 and 1,892.90

• 1,119.97

• 111.997

• 1,119.097

• 4,892.124

What is an example of a mixture?

• sugar cube

• silver fork

• table salt

• cellulose

A group of students was asked to separate a mixture of iron filings, sawdust, sugar, and plastic beads.

What is the best method to separate the sawdust?

• 1) Add water

  2) Filter

  3) Evaporate the water

• 1) Add water

  2) Use a magnet

  3) Evaporate the water

• 1) Sift

  2) Filter

  3) Use a magnet

• 1) Sift

  2) Add water

  3) Floatation

Use the data in the table to answer the question.

What claim is best supported by the data in this table?

• Vinegar and oil separate after they have been combined into a mixture.

• Solids and liquids cannot be combined into a mixture.

• When two substances are mixed together, their total mass does not change.

• Some of the mass of the water escape as gas mixed with sugar.

Boiling sugar water is one way you can _____

• separate mixture.

• combine substances.

• create a solution.

• separate a substance.