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The two cases are :
or
- a -4 = 0, that leads to a = 4
We can conclude :

Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Answer:
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Step-by-step explanation:
To get to 86 by only using 10's and 1's you count by 10, 8 times and count by 1, 6 times.
The student is not correct.
Absolute value means distance from zero
|-9| = 9
|4| = 4
Since 9 is greater than 4,
|-9| is greater than |4|
In other words, -9 is further from zero then 4
Answer: 75.4
Steps:
Circumference = 2πr
π = pi
r = radius
2π(12) = 75.39822