Answer:
2 inches
Step-by-step explanation:
Since his actual height was 4 feet and 2 inches, instead of the estimate of 4 feet, the difference was 2 inches.
This means the error in inches was also 2 inches, since the estimated height was 2 inches lower than the one at the doctor's office.
So, the error is 2 inches
Answer:
x = (+ - ) 9
Step-by-step explanation:
x^2 = 81
u know how u can sometimes cancel something out by doing the opposite.
This is one of those times as well. the opposite of ^2 = square root.
so if we take the square root of both sides, this will cancel out the^2 on the left side.
sqrt (x^2) = sqrt(81)
x = (+-) 9.....thats a positive and a negative sign...because the sqrt of 81 is both 9 and -9.
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