Tom is 13 years old. Brad is 10 yrs old. which number sentence can be used to find how much older Tom is than Brad
2 answers:
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Answer:
x = ±
Step-by-step explanation:
Given
x² = 20 ( take the square root of both sides )
x = ±
which can be simplified to
x = ± 2
[ ± means plus or minus ]