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3 years ago

-42.8451 Round the result to the nearest tenth and then to the nearest hundredth

Mathematics

1 answer:

DerKrebs [107]3 years ago

6 0

Answer:

Tenth:-42.8

Hundredth: -42.85

To explain:

To the right of the decimal point every name of the place ends with -th.

If a number is bigger than 5 you round the number left to it by 1

If it's 4 or smaller you don't do anything.

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4 years ago

Read 2 more answers

What is the r-value of the following data, to three decimal places

Mrrafil [7]

<h2>Answer:</h2>

Option: A is the correct answer.

A. -0.903

<h2>Step-by-step explanation:</h2>

The formula to calculate correlation coefficient r is given by:

$r=\dfrac{n\sum xy-(\sum x)(\sum y)}{\sqrt{n(\sum x^2)-(\sum x)^2}\sqrt{n(\sum y^2)-(\sum y)^2}}$

x y xy x² y²

4 23 92 16 529

5 12 60 25 144

8 10 80 64 100

9 9 81 81 81

13 2 26 169 4

-------------------------------------------------------------------------

∑ 39 56 339 355 858

Also n=5 ( as there are 5 data points )

Hence, we get:

$r=\dfrac{5\times 339-39\times 56}{\sqrt{5\times 355-(39)^2}\times \sqrt{5\times 858-(56)^2}}\\\\\\r=\dfrac{-489}{\sqrt{254}\times \sqrt{1154}}\\$

$r=-\dfrac{489}{541.40188}=-0.9032$

Hence, the r-value of the following data, to three decimal places is:

A. -0.932

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4 years ago

What is the simplified form of 10,000x64 ?

evablogger [386]

Answer:

64,0000

Step-by-step explanation:

Not completely sure what you mean by simplified but her is the answer when the two numbers are multiplied.

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3 years ago