KYOTE 36

Front

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

Back

Mean = (Sum of all scores) / (Number of scores)

Front

If a student has a mean score of 75 on three tests and two of the scores are 80 and 75, how do you find the third score?

Back

Let the third score be x. Then, (80 + 75 + x) / 3 = 75. Solving gives x = 70.

Front

What is a system of equations?

Back

A system of equations is a set of two or more equations with the same variables.

Front

How do you solve a system of equations using substitution?

Back

1. Solve one equation for one variable. 2. Substitute that expression into the other equation.

Front

What does it mean to find the slope of a line?

Back

The slope of a line represents the rate of change of y with respect to x, calculated as (change in y) / (change in x).

Front

What is the formula for calculating interest earned on an investment?

Back

Interest = Principal x Rate x Time.

Front

If x is invested at 3% and y at 6%, how do you express the total interest earned?

Back

.03x + .06y.

Front

How do you convert miles per hour to minutes per mile?

Back

To convert mph to minutes per mile, use the formula: Minutes per mile = 60 / mph.

Front

How long does it take to travel a distance at a constant speed?

Back

Time = Distance / Speed.

Front

What is the slope-intercept form of a linear equation?

Back

The slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.