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Amanda [17]
3 years ago
6

I need to know if this number is any of the following:

Mathematics
2 answers:
Nikitich [7]3 years ago
8 0
It is rational/irrational

bonufazy [111]3 years ago
5 0
A rational number can be written in the form a/b where a and b are integers and b≠0

so

remember that √(a/b)=(√a)/(√b)

so\sqrt{\frac{82}{20}}=\sqrt{\frac{41}{10}}=\frac{\sqrt{41}}{\sqrt{10}}\frac{\sqrt{410}}{10}

we can't make it into a/b so it's irrational
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Find the slope of the line that passes through the points (-6,-8) and (-6,12)
yulyashka [42]

Answer:

Undefined

Step-by-step explanation:

m = Δy / Δx

m = (12 − -8) / (-6 − -6)

m = 20 / 0

m = undefined

The slope is undefined.

5 0
3 years ago
Read 2 more answers
789/548x-89/887=688/8724 find x
Olin [163]

\frac{789}{548}x- \frac{89}{887}=\frac{688}{8724}

first we try to semplify as much as possible the fractions.

First we decompose the numbers

789 = 3 * 263

548 = 2 * 2 * 137 = 2^2

they have nothing in common, so the first fraction remains so

89 = 89 (prime number)

887 = 887 (prime number)

they have nothing in common, so the second one remains so

688 = 2 * 2 * 2 * 2 * 43 = 2^4 * 43

8724 = 2 * 2 * 3 * 727 = 2^2 * 3 * 727

they have 2^2 (=4) in common, so the numerator and the denominator can be devided by 4

\frac{688}{8724}= \frac{688:4}{8724:4}=\frac{172}{2181}

so:

\frac{789}{548}x- \frac{89}{887}=\frac{172}{2181}

now we calculate the common denominator

take the scomposition:

548 = 2^2 * 137

887 = 887

2181 = 3 * 727

take every number one time

so the common denominator is 2^2 * 137 * 887 * 727 * 3 = 1'060'131'756

now calculate every single numerator: first we divide each denominator by the common denominator, then we moltiply the result with each numerator

first fraction: 789/548

1060131756 / 548 = 1934547

1934547 * 789 = 1526357583

second fraction: 89/887

1060131756 / 887 = 1195188

1195188 * 89 = 106371732

third one: 172/2181

1060131756 / 2181 = 486076

486076 * 172 = 83605072

now we can delete the common denominator

1526357583x - 106371732 = 83605072

solve it

1526357583x = 83605072 + 106371732

1526357583x = 189976804

x = 1526357583 / 189976804

decompose

1526357583 = 887 * 3 * 3 * 727 * 263

189976804 = 137 * 2 * 2 * 211 * 53 * 31

nothing in common

x = 1526357583 / 189976804

8 0
3 years ago
Evaluate<br> 2x - Y when x= 5, y=3
Allushta [10]

Answer:

the answer is 7

Step-by-step explanation:

2x-y

2*5 - 3

10 - 3

7                                  

7 0
3 years ago
What's the Error? Explain the error. Find the correct solution.<br> 42-(-6)=-7
earnstyle [38]

Answer: 42 -(-6)= 48

Step-by-step explanation:

a negative - a negative will always equal a positive

:)

3 0
2 years ago
You want to know the mean number of sick days taken by students in your county last year. At each of five schools you randomly s
Assoli18 [71]

Answer:

4

Step-by-step explanation:

Add each sample separately

A.17   B. 47   C. 39 D. 52 E. 45

Then you add them all together which totals 200 sick days

We know that they surveyed 5 schools and 10 students at random from each one. So we want to know the mean of sick days the students took not the schools in all.

So we divide 200/50

And get a mean of 4.

So each student took an average of 4 sick days each in the country.

3 0
3 years ago
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