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2 years ago

I need help with this ASAP!!

Mathematics

1 answer:

liraira [26]2 years ago

4 0

Answer:=

−243 /512 Fraction

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A student repeatedly measures the mass of an object using a mechanical balance and gets the following values: 560 g, 562 g, 556

MrRissso [65]

Answer: 2.76 g

Step-by-step explanation:

The formula to find the standard deviation:-

$\sigma=\sqrt{\dfrac{\sum(x_i-\overline{x})^2}{n}}$

The given data values : 560 g, 562 g, 556 g, 558 g, 560 g, 556 g, 559 g, 561 g, 565 g, 563 g.

Then, $\overline{x}=\dfrac{\sum_{i=1}^{10} x_i}{n}\\\\\Rightarrow\ \overline{x}=\dfrac{560+562+556+558+560+556+559+561+565+563}{10}\\\\\Rightarrow\ \overline{x}=\dfrac{5600}{10}=560$

Now, $\sum_{i=1}^{10}(x_i-\overline{x})^2=0^2+2^2+(-4)^2+(-2)^2+0^2+(-4)^2+(-1)^2+1^2+5^2+3^2\\\\\Rightarrow\ \sum_{i=1}^{10}(x_i-\overline{x})^2=76$

Then, $\sigma=\sqrt{\dfrac{76}{10}}=\sqrt{7.6}=2.76$

Hence, the standard deviation of his measurements = 2.76 g

6 0

3 years ago

nirvana33 [79]

Answer:

$6 per carton.

Step-by-step explanation:

$54 divided by 9= $6

5 0

3 years ago

Simplify this expression: 13 + (–12) – (–5) = ?<br> A. 6<br> B. –6<br> C. –30<br> D. 30

Anuta_ua [19.1K]

13 + (-12) - (-5)

13 - 12 + 5

1 + 5

= 6.

Answer is A)

3 0

3 years ago

Read 2 more answers

Can someone help me

Sloan [31]

Answer:

The volume is 75

Step-by-step explanation:

because the volume is the width, length, and height, add them together.

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3 years ago

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49^x/4-5 = 343^x/3 what does x equal

ratelena [41]

Answer 8 here is why because 34 x8 is 184

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2 years ago