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3 years ago

Classify the following number: 12

Mathematics

1 answer:

zubka84 [21]3 years ago

7 0

Answer:

Rational, Natural Number, Whole Number,Integer

Step-by-step explanation:

A natural number is also a whole number.

Every integer is a rational number.

Every natural number is a whole number, integer, and a rational number.

Every whole number is a natural number, integer, and a rational number.

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NISA [10]

Answer:

x = 6.59 hrs = about 6 hours, 35 minutes

Step-by-step explanation:

Adam drives at 85 km / h. Let's set up equivalent fractions to see how long if he drives 560 km.

$\frac{85 km}{1 hr} = \frac{560 km}{x hr}$

Cross-multiply:

85x = 560

Solve for x:

560/85 = x

<u>x = 6.59 hrs = about 6 hours, 35 minutes</u>

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alex41 [277]

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3 years ago

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3 years ago

Read 2 more answers

5. If the covariance between the variables x and y is 18 and the variance

klasskru [66]

Answer:

The coefficient of correlation=0.5

Step-by-step explanation:

We are given that

Covariance between the variable x and y=18

Variance of x=16

Variance of y=81

We have to find the coefficient of correlation

We know that

Coefficient of correlation

$r=\frac{covariance(x,y)}{\sqrt{variance(x)}\times \sqrt{variance(y)}}$

Using the formula

$r=\frac{18}{\sqrt{16}\times \sqrt{81}}$

$r=\frac{18}{4\times 9}$

$r=0.5$

Hence, the coefficient of correlation=0.5

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3 years ago