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deff fn [24]
3 years ago
5

Sara and Macki were doing a math activity together in class. They were told to review the two problem solutions shown below and

determine which of the two cards is correctly solved.
Which of the two cards is correctly solved?

Mathematics
1 answer:
IgorC [24]3 years ago
6 0

Answer:

I NEED THE ANSWER

Step-by-step explanation:

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the surface of a rectangle is 352mm squared. two of the dimensions are 4 mm 8mm. find the measure of the other dimension​
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Step-by-step explanation:

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What did the teacher say to the vampire when he failed his math test?
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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
4 years ago
Simplify: (2.4)(a – 0.2b + 3.5c)
gogolik [260]
Use the distributive property to get...  2.4a - 0.48b + 8.4c
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