ACT Math Practice

Front

What is the formula to find the percentage of a component in a mixture?

Back

Percentage = (Amount of Component / Total Amount of Mixture) × 100

Front

If a mixture contains 40% solvent, how much solvent is in 25 liters?

Back

10 liters of solvent (0.4 × 25 = 10)

Front

How do you calculate the new concentration of a mixture after adding more solvent?

Back

New concentration = (Initial amount of solvent + Amount added) / (Total volume after addition)

Front

Back

Front

What is the sine addition formula?

Back

sin(a + b) = sin(a)cos(b) + cos(a)sin(b)

Front

What is the value of sin(60° + 30°)?

Back

sin(90°) = 1

Front

How do you evaluate an expression with variables?

Back

Substitute the variable with its value and perform the operations.

Front

Back

16

Front

What is vertical line symmetry in graphs?

Back

A graph has vertical line symmetry if it can be folded along a vertical line and both halves match.

Front

Which shape does not have vertical line symmetry?

Back

Scalene triangle.