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3 years ago

What is an irrational number

2 answers:

alexandr1967 [171]3 years ago

6 0

An irrational number is a number that cannot be written as a fraction of an integer over an integer. When written as a decimal, an irrational number never ends and does not repeat.

timofeeve [1]3 years ago

3 0

An irrational number is a number that can't be written as a simple fraction such as pi because you can't turn pi into a fraction.

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Which proportion can be used to convert 22 kilograms to grams

Verizon [17]

1kg=1000g

Thus, 22kg=22000g

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3 years ago

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Which is prime????????

Simora [160]

Answer: 11, 3, and 17

so C E and F

Step-by-step explanation:

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Given: ABCD is a trapezoid with AB || DC. If m∠A = 125 and m∠B = 99, find m∠C/

Pavlova-9 [17]

Answer:

The measure of angle C is $81\°$

Step-by-step explanation:

we know that

If AB || DC

then

$m$ -----> supplementary angles by consecutive interior angles

and remember that the sum of the interior angles in a trapezoid is equal to 360 degrees

$m$

step 1

Find the measure of angle D

$m$

substitute the measure of angle A

$125\°+m$

$m$

step 2

Find the measure of angle C

$m$

substitute the values

$125\°+99\°+m$

$m$

5 0

3 years ago

A market research team compiled the following discrete probability distribution, where X represents the number of automobiles ow

rodikova [14]

Answer:

The standard deviation of X is 0.7

Step-by-step explanation:

We are given the following distribution:

x: 0 1 2 3

P(x): 0.3 0.5 0.2 0.4

We have to find the standard deviation of X.

Formula:

$E(x) = \displaystyle\sum x_iP(x_i)\\\\E(x) =0(0.3) + 1(0.5) + 2(0.2) + 3(0.4)\\\\E(x) = 2.1\\\\E(x^2) = \displaystyle\sum x_i^2P(x_i)\\\\E(x^2) =0(0.3) + 1(0.5) + 4(0.2) + 9(0.4)\\\\E(x^2) = 4.9\\\\Var(x) = E(x^2) - (E(x))^2 = 4.9-(2.1)^2 = 0.49\\\\\sigma(x) = \sqrt{Var(x)} =\sqrt{0.49} = 0.7$

Thus, the standard deviation of X is 0.7

6 0

3 years ago

Approximate each irrational number to the nearest thousandth. <br> ✔5<br> ✔19<br> ✔99<br> ✔42

xenn [34]

Answer:

look down

Step-by-step explanation:

the square root of 5 is : 2.2360679775

rounded to the nearest thousandth is 2.236

__________________________________

the square root of 19 is: 4.35889894354

rounded to the nearest thousandth is 4.359

__________________________________

the square root of 99 is: 9.94987437107

rounded to the nearest thousandth is 9.950

__________________________________

the square root of 42 is: 6.48074069841

rounded to the nearest thousandth is 6.481

hope this helps :)

5 0

3 years ago