Express
1 answer:
Answer:
Step-by-step explanation:
The solution is in the picture
At line 7, the denominator of the expression contains irrational number (which is surd 10). This shows that the expression is not simplified
At line 8 of my solution, multiply both numerator and denominator by the conjugate of
which is
in order to eliminate irrational number at denominator
More info of conjugate
The conjugate of a+b is a-b,
Why conjugate? Try it yourself!
Hint: (a+b)(a-b) = a^2 - b^2
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Answer:
Step-by-step explanation:
The error in rounding a number is half of the unit of measure.
The number was rounded to the nearest 0.1 unit so the error is 1/2×0.1, which equals 0.05.
Now we add 3.7 and 0.05, which equals 3.75 and we also take 3.7 - 0.05, which equals 3.65
So, the error interval is: