1st Six Weeks Review (Unit 1 & 2)

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Front

Convert 0.000398 to scientific notation.

Back

3.98 x 10^-4

Front

What does the dilation (x, y) --> (2x, 2y) represent?

Back

This represents a dilation that enlarges a figure by a scale factor of 2.

Front

What is the scale factor in a dilation if ABC ~ XYZ and the scale factor is \frac{2}{3}?

Back

The scale factor \frac{2}{3} means that the dimensions of ABC are reduced to \frac{2}{3} of the dimensions of XYZ.

Front

What is the definition of a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form, using powers of ten.

Front

What is the difference between an integer and a rational number?

Back

An integer is a whole number that can be positive, negative, or zero, while a rational number can be expressed as a fraction of two integers.

Front

How do you identify the fastest object from a set of objects?

Back

To identify the fastest object, compare their speeds or distances traveled in the same time frame.

Front

What is the formula for finding the area of a trapezoid?

Back

The area A of a trapezoid can be calculated using the formula A = \frac{1}{2} (b_1 + b_2) h, where b_1 and b_2 are the lengths of the two parallel sides and h is the height.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but may differ in size, meaning their corresponding angles are equal and their corresponding sides are proportional.