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Ira Lisetskai [31]
3 years ago
6

Andrew estimated the weight of his dog to be 60 lb. The dog’s actual weight was 68 lb. What was the percent error in Andrew’s es

timate? Round your answer to the nearest tenth of a percent. __________ %
Mathematics
1 answer:
Anna [14]3 years ago
4 0
Well, the error value is 8, he was off by 8 units... so, if we take 68 to be the 100%, what is 8 in percentage off of it?

\bf \begin{array}{ccllll}
amount&\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
68&100\\
8&x
\end{array}\implies \cfrac{68}{8}=\cfrac{100}{x}
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Answer:

The correct answer is:

we cannot take an even root of a negative number in the real number system.

Explanation:

A rational exponent is another way of writing a root. The denominator of the rational exponent will be the root, and the numerator will be the power of the number under the root. If the denominator is even, this means we are taking an even root, such as square root, 4th root, etc.

If the base is negative, this means we want an even root of a negative number.

Any even root can be broken down into a series of square roots, done one after another.

However, we cannot take the square root of a negative number using real numbers; this is because a square root is a number multiplied by itself to get the answer; a negative times a negative is a positive, as is a positive times a positive, so there is no way to multiply the same number twice and get a negative.

Read more on Brainly.com - brainly.com/question/2004951#readmore

Step-by-step explanation:

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3 years ago
If a worker can do his job in 5 hours, and a student can do the same job in 8 hours, what part of the work is left to finish aft
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Answer:

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Step-by-step explanation:

Firstly, we need to calculate their joint work rate

That will be;

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So the part that will be completed in two hours is 26/40

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1 - 26/40 = 14/40 = 7/20

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