Is 16/3 rational or irrational?

2 answers:

5 0

16/3 is rational simply because it is a fraction made up of whole numbers.

Irrational numbers cannot be expressed as fractions made up of whole numbers.

Marina CMI [18]3 years ago

5 0

Rational because it can be written as a fraction and a repeating decimal

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3x To the power of -2 X 4x To the power of -3

damaskus [11]

Answer:

Answer = $12 x^{-5}$

Step-by-step explanation:

Step 1:-

simplifying $3 x^{-2} × 4 x^{-3}$

$3 × 4(x^{-2} )(x^{-3} )$

base are equal powers are added

on simplification $12 x^{-5}$

6 0

3 years ago

Questions 2-7 will all be in regards to this data set:Observation X Y1 20 302 23 353 28 404 26 385 24 376 32 457 35 508 24 349 3

Tomtit [17]

Answer:

r =0.4437

Step-by-step explanation:

We have the follwoing dataset:

X: 20,23,53,4,24,32,35,24,31,23

Y: 30,35,40,38,37,45,50,34,42,32

n=10

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

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