Pretest Answers

The formula for the area of a triangle is A=12⁢b⁢h, where b is the length of the base and h is the height. Find the height of a triangle that has an area of 30 square units and a base measuring 12 units.

Solve for k. 8 k plus 2 m is equal to 3 m plus k

Solve the equation for a. K is equal to 4 a plus 9 a b

The equation shown is used in statistics to relate z, the Z-score of a data element, to x, the value of the data element, m, the mean of the data set, and d, the standard deviation of the data: z=(x−m)/(d) Solve the formula for m , the mean of the data set. Enter your answer in the box.

The equation shown relates A, the area of a circle, to r, the radius of the circle: A=π⁢r^2 Solve the formula for r Then find the radius of a circle that has an area of 78.5 square centimeters. Use 3.14 for π Enter your answers in the boxes.

In physics class, Carrie learns that a force, F, is equal to the mass of an object, m, times its acceleration, a. She writes the equation F=m⁢a. Using this formula, what is the acceleration of an object with f is equal to 7 point 9 2 newtons and m is equal to 3 point 6 kilograms? Express your answer to the nearest tenth. Note: The unit for Force (the Newton) is measured in the fraction with numerator ratio of kg point m and denominator s squared

Marta is solving the equation s is equal to 2 pi r h plus 2 pi r squared for h Which should be the result?

The equation d is equal to m over V can be used to calculate the density, d , of an object with mass, m , and volume, V Which is an equivalent equation solved for V ?

Solve for a. 7 a minus 2 b is equal to 5 a plus b

Solve for w. 5 w plus 9 z is equal to 2 z plus 3 w