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iren2701 [21]
2 years ago
6

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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Charlie guesses that his dog weighs 34. 5 pounds. The dog actually weighs 32. 7 pounds. What is the percent error in Charlie’s g
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.

\rm Percent \: Error = |\dfrac{Error}{Actual value}|\times 100 \\\\Percent \: Error = | \dfrac{\text{(Actual Value - Estimated Value)}}{Actual value}|\times 100 \\

(here |x| is such that it makes x non negative, thus, |-5| = 5, and |5| = 5)

For the given case, it is specified that:

Actual weight of dog = 32.7 pounds

Guessed weight of dog, by Charlie : 34.5 pounds.

Error = 32.7 - 34.5 = -1.8 pounds

Thus, percent error in Charlie's guess is calculated as:

\text{Percent Error} = |\dfrac{-1.8}{32.7}| \times 100 \approx 5.5\%

Hence, the percent error in Charlie’s guess is obtained approximately is given by: Option D: 5.5%

Learn more about percent error here:

brainly.com/question/25749180

3 0
2 years ago
What is the correlation
RideAnS [48]

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Question 3 Solve for m. 4 over 3 m equals 4
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Answer:

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Step-by-step explanation:

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Please help, i need to raise my grade
Dmitrij [34]

Answer:

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Step-by-step explanation:

To isolate r, we're going to need to do some algebraic manipulation.

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r=\dfrac{v^2}{a}

Hope this helps!

5 0
3 years ago
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