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2 years ago

Are all rational numbers real numbers? if not plz explainn

Mathematics

2 answers:

skad [1K]2 years ago

6 0

Answer:

yes

Step-by-step explanation:

all rational numbers are real numbers

vlabodo [156]2 years ago

4 0

Answer:

All rational numbers are also real numbers.

Step-by-step explanation:

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Which is a unit rate?<br> A. 1/7 <br> B. 48/4<br> C. 34/1 <br> D. 40/5

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Normally a unit rate will be x per 1y. Example: 60 miles/1hr.

Therefore, the option with the denominator as 1 would be the unit rate.

The correct option is C.

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3 years ago

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Find the volume of this prism, please

Elodia [21]

Answer
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Step by Step
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If 10,500 is deposited in a compound interest account paying 2.99% interest annually, how much will be in the account after 5 ye

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3 years ago

Brent is saving for a computer that is $840. He will also need to pay a 6% sales tax. What is the total cost of the computer aft

Kobotan [32]

Answer:

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2 years ago

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A contractor has submitted bids on three state jobs: an office building, a theater, and a parking garage. State rules do not all

german

Answer:

The following are the answer to this question:

Step-by-step explanation:

In the given question the numeric value is missing which is defined in the attached file please fine it.

Calculating the probability of the distribution for x:

$\to f(x) = 0.19\ for \ x=14\\\\\to f(x) = 0.29 \ for\ x=7\\\\\to f(x) = 0.38\ for \ x=1\\\\\to f(x)=0.14 \ for \ x=0\\$

The formula for calculating the mean value:

$\bold{ E(X)= x \times f(x)}$

$=14 \times 0.19+7 \times 0.29+1 \times 0.38+0\times 0.14\\\\=2.66 + 2.03+0.38+ 0\\\\=5.07$

$\bold{E(X^2) = x^2 \times f(x)}$

$=14^2 \times 0.19+7^2 \times 0.29+1^2 \times 0.38+0^2 \times 0.14 \\\\=196 \times 0.19+ 49 \times 0.29+1 \times 0.38+0 \times 0.14\\\\= 37.24+ 14.21+ 0.38+0 \\\\=51.83$

use formula for calculating the Variance:

$\to \bold{\text{Variance}= E(X^2) -[E(X)]^2}$

$= 51.83 - (5.07)^2\\\\= 51.83 - 25.70\\\\=26.13$

calculating the value of standard deivation:

Standard Deivation (SD) = $\sqrt{Variance}$

$= \sqrt{26.13} \\\\=5.111$

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3 years ago