What is the circumference of a racetrack that has a diameter of 90 feet?
1 answer:
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Answer:
Step-by-step explanation:
Given: Trey's test score average decreased by 14 points this semester.
To find: a signed number to represent this change in average.
Solution:
The decrease can be denoted by minus sign and increase can be denoted by plus
sign.
So, a signed number to represent the change in test score average is