Solve: 18/9- root(2,81) -Image below-

Mathematics

2 answers:

balu736 [363]2 years ago

7 0

Answer:

-7

Step-by-step explanation:

$(18 \div 9) - \sqrt{81 } \\ \\ 2 - 9 \\ - 7$

Lubov Fominskaja [6]2 years ago

3 0

With the order of operations, you must do the division (18/9) first. Then do the square root. Then do the subtraction.

$\begin{aligned}\dfrac{18}{9} - \sqrt{81} &= 2-\sqrt{81}\\[0.5em]&=2-9\\[0.5em]&=-7\end{aligned}$

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expeople1 [14]

Percent error is the amount of error to actual value, in percent. The percent error in Charlie’s guess is approximately: Option D: 5.5%

<h3>How to calculate the percent error?</h3>

Suppose the actual value and the estimated values after the measurement are obtained. Then we have:

Error = Actual value - Estimated value

To calculate percent error, we will measure how much percent of actual value, the error is, in the estimated value.

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