12/19 (7 Plus)

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height

Front

How do you find the constant of proportionality in a direct variation?

Back

The constant of proportionality (k) is found by dividing the dependent variable by the independent variable (y/x = k).

Front

What is the value of x in the equation 2x + 3 = 15?

Back

x = 6

Front

What is the measure of an angle in a triangle if the other two angles are 30° and 60°?

Back

The measure is 90° (sum of angles in a triangle is 180°).

Front

If a = 1, b = -4, and c = -5, what is the value of 6a + b - c?

Back

7

Front

What is the relationship between the height and base of a triangle when the area is known?

Back

Area = 1/2 * base * height; if area and height are known, base can be calculated as base = 2 * Area / height.

Front

What is the definition of a proportional relationship?

Back

A relationship where two quantities maintain a constant ratio.

Front

How do you calculate the area of a triangle with a base of 6 feet and a height of 4 feet?

Back

Area = 1/2 * 6 * 4 = 12 square feet.

Front

What is the measure of angle QRT if it is given as 30°?

Back

The measure of angle QRT is 30°.

Front

What is the solution to the equation 3x - 9 = 0?

Back

x = 3.