
7th PBA Test #4 Review
Flashcard
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the mean of a set of numbers?
Back
The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.
2.
FLASHCARD QUESTION
Front
How do you calculate the mean of the following numbers: 9, 8, 12, 6, 10?
Back
Add the numbers: 9 + 8 + 12 + 6 + 10 = 45. Then divide by the count (5): 45 / 5 = 9.
3.
FLASHCARD QUESTION
Front
Back
To solve for a, multiply both sides by -8/3: a = -48 * (-8/3) = 128.
4.
FLASHCARD QUESTION
Front
Back
Cross-multiply and simplify to find a. The solution is a = 7.
5.
FLASHCARD QUESTION
Front
What is the slope of a line?
Back
The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise/run).
6.
FLASHCARD QUESTION
Front
How do you find the slope of a line given two points (x1, y1) and (x2, y2)?
Back
Use the formula: slope = (y2 - y1) / (x2 - x1).
7.
FLASHCARD QUESTION
Front
What does it mean if the slope of a line is -1?
Back
A slope of -1 indicates that for every unit increase in x, y decreases by one unit, resulting in a downward slant.
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