ACT Math

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter (P) of a rectangle is given by the formula P = 2(x + y), where x and y are the lengths of the sides.

Front

How do you calculate the slope of a line given two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1).

Front

If 30% of students come from families with only one child, how do you find the number of students not from such families?

Back

To find the number of students not from families with only one child, calculate 70% of the total number of students.

Front

What is scientific notation?

Back

Scientific notation is a way of expressing numbers as a product of a number between 1 and 10 and a power of 10.

Front

Convert 6700000 to scientific notation.

Back

6.7 x 10^6

Front

What is the value of 3x² - 2y when x = 3 and y = 5?

Back

When x = 3 and y = 5, 3(3)² - 2(5) = 27 - 10 = 17.

Front

What is the difference between 3x² - 2y and 2x² - 3y when x = 3 and y = 5?

Back

The difference is 14.

Front

What is the formula for the area of a rectangle?

Back

The area (A) of a rectangle is given by the formula A = x * y, where x and y are the lengths of the sides.

Front

How do you find the midpoint of a line segment between two points (x1, y1) and (x2, y2)?

Back

The midpoint (M) is calculated as M = ((x1 + x2)/2, (y1 + y2)/2).

Front

What is the quadratic formula?

Back

The quadratic formula is used to find the roots of a quadratic equation and is given by x = (-b ± √(b² - 4ac)) / (2a).