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3 years ago

Is 10/2 a integer ,natural number,rational number,irrational number or a whole number

Mathematics

2 answers:

prohojiy [21]3 years ago

7 0

It is an rational number. A rational number is a number that can be written as a ratio or fraction.

mr Goodwill [35]3 years ago

6 0

It is a rational number, because rational numbers can be a fraction, and the number 10/2 is a fraction..... So therefore the answer is a RATIONAL number.

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In a shipment of 56 vials, only 13 do not have hairline cracks. If you randomly select 3 vials from the shipment, in how many wa

Elden [556K]

Answer: 27434

Step-by-step explanation:

Given : Total number of vials = 56

Number of vials that do not have hairline cracks = 13

Then, Number of vials that have hairline cracks =56-13=43

Since , order of selection is not mattering here , so we combinations to find the number of ways.

The number of combinations of m thing r things at a time is given by :-

$^nC_r=\dfrac{n!}{r!(n-r)!}$

Now, the number of ways to select at least one out of 3 vials have a hairline crack will be :-

$^{13}C_2\cdot ^{43}C_{1}+^{13}C_{1}\cdot ^{43}C_{2}+^{13}C_0\cdot ^{43}C_{3}\\\\=\dfrac{13!}{2!(13-2)!}\cdot\dfrac{43!}{1!(42)!}+\dfrac{13!}{1!(12)!}\cdot\dfrac{43!}{2!(41)!}+\dfrac{13!}{0!(13)!}\cdot\dfrac{43!}{3!(40)!}\\\\=\dfrac{13\times12\times11!}{2\times11!}\cdot (43)+(13)\cdot\dfrac{43\times42\times41!}{2\times41!}+(1)\dfrac{43\times42\times41\times40!}{6\times40!}\\\\=3354+11739+12341=27434$

Hence, the required number of ways =27434

5 0

2 years ago

How do you solve this compound inequality???? Please show work!!! Thanks!!

svet-max [94.6K]

5n - 1 < -16

Add 1

5n < -15

Divide

n < -3

n is less than -3

-3n - 1 < 8

add 1

-3n < 9

divide by -3

n < -3

n is also less than -3

3 0

3 years ago

Can someone please help me answer this Math problem?

kap26 [50]

Answer:

2√2.

Step-by-step explanation:

We use the Pythagoras Theorem:

x^2 = 2^2 + 2^2

x^2 = 8

x = √8

= 2√2.

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2 years ago

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Vesnalui [34]

False, 4-2(3+7) = -16 and 4-2•3+2•7= 12

6 0

2 years ago

Knowing that sin 30° = 1/2 , what is a?

umka2103 [35]

Answer: D

Step-by-step explanation:

3 0

2 years ago

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