Semester CBA Extra Review 7th Grade

Front

What is the approximate value of √13 + √21?

Back

The approximate value is around 6.24.

Front

What does the rate of change represent in a graph?

Back

The rate of change indicates how much a quantity changes in relation to another quantity, often expressed as a slope.

Front

How do you convert scientific notation to standard form?

Back

To convert scientific notation to standard form, multiply the coefficient by 10 raised to the power indicated.

Front

What is the diameter of a circle if it is represented as √18 cm?

Back

The diameter is approximately 4.24 cm.

Front

What does a ratio of 1 to 8 mean in a graph?

Back

It means for every 1 unit of one quantity, there are 8 units of another quantity.

Front

How do you find the average of a set of numbers?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is the formula for the area of a circle?

Back

The area A of a circle is given by A = πr², where r is the radius.

Front

What is the difference between a linear and a non-linear graph?

Back

A linear graph shows a constant rate of change, while a non-linear graph shows a variable rate of change.

Front

What does it mean for a value to decrease by $500 each year?

Back

It means that each year, the value is reduced by $500 from its previous value.

Front

How do you represent a relationship between two variables in a table?

Back

You list one variable in rows and the corresponding values of the other variable in columns.