ACT Math Formulas Quiz

What is the formula to calculate the average of a set of numbers?

• Difference of numbers divided by the number of numbers

• Product of numbers divided by the number of numbers

• Sum of numbers divided by the number of numbers

• Sum of numbers multiplied by the number of numbers

If the average weight of three people is 163 pounds, what is their total weight?

• Cannot be determined

• 489 pounds

• 326 pounds

• 163 pounds

How do you calculate the slope from two points on a graph?

• Multiply the x-values and y-values

• Add the x-values and y-values

• Subtract the y-values and divide by the x-values

• Subtract the x-values and divide by the y-values

In the slope-intercept form of a line, what does the 'm' represent?

• The constant term

• The y-intercept

• The x-intercept

• The slope

What is the formula for the circumference of a circle?

• πr²

• 2πr

• πd

• r²

Which formula represents the area of a circle?

• 2πr

• πr²

• πd

• r²

What is the formula for the volume of a cylinder?

• r²h

• πdh

• 2πrh

• πr²h

What does the mnemonic SOHCAHTOA help you remember?

• Formulas for circle areas

• Trigonometric ratios

• Volume formulas

• Slope calculations

In the mnemonic SOHCAHTOA, what does 'SOH' stand for?

• Sine equals hypotenuse over opposite

• Sine equals adjacent over hypotenuse

• Sine equals opposite over adjacent

• Sine equals opposite over hypotenuse

What is the cosine of an angle in a right triangle according to SOHCAHTOA?

• Opposite over adjacent

• Hypotenuse over adjacent

• Adjacent over hypotenuse

• Opposite over hypotenuse