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7th Grade Math Vocabulary
Terms in this set (50)
The intersection of a plane and a solid.
The multiplicative inverse of a number
An arrangement, or listing, of objects in which order is important.
a line that intersects two parallel lines
one of four sections into which the coordinate plane is divided
the product of an integer and all the integers below it
A three-dimensional figure with faces that are polygons
Constant of Variation
a constant ratio in a direct proportion (can also be called constant of proportionality)
An amount paid to an employee based on a percentage of the employee's sales
a grouping of items in which order does not matter
The relationship between two variable quantities that have a constant ratio.
The faces on the top and bottom of a figure that name the figure.
The amount of money borrowed
The set of numbers that can be written in the form a/b where a and b are integers and b does not equal 0.
the technique of using similar figures and proportions to find a measure for an object that is too difficult t o measure directly.
A scale written as a ratio in simplest form.
In a polyhedron, a face that is not a base.
Fundamental Counting Principle (FCP)
uses multiplication to find the total number of outcomes with compound events
An equation stating that two ratios are equal
the set of all possible outcomes of a probability experiment
Interquartile Range (IQR)
the difference between the first and third quartiles - (UQ - LQ)
A mathematical experiment that approximates a real world process.
A numerical factor in a term of an algebraic expression
a single number or variable, or numbers and variables multiplied together
A value much greater or much less than the others in a data set
Terms whose variables and exponents are the same.
Mean Absolute Deviation (MAD)
the average distance between each data value and the mean
The set of whole numbers and their opposites
A comparison of two quantities by division
A rate with a denominator of 1.
A conclusion reached on the basis of data and reasoning
likelihood that a particular event will occur
The ratio of the number of equally likely outcomes in an event to the total number of possible outcomes. What SHOULD happen
The ratio of the number of times an event occurs to the total number of trials, or times that the activity is performed. What DOES happen.
An event consisting of two or more simple events.
The outcome of one event does not affect the outcome of the second event
The outcome of one event does affect the outcome of the second event
Rate of Change
A rate that describes how one quantity changes in relation to another
Constant of Proportionality
the constant value of the ratio of two proportional quantities x and y
Percent of Change
the percent a quantity increases or decreases from its original amount
the amount added to the cost of merchandise to establish the selling price
Two angles whose sum is 90 degrees
Two angles whose sum is 180 degrees
Angles that have a common side and a common vertex (corner point).
A pair of opposite congruent angles formed by intersecting lines
A decimal that repeats a digit or group of digits forever.
An event that is most likely to happen.
The distance a number is from zero on a number line
A set of outcomes to which a probability is assigned.
The number of times an event occurs
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