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Inga [223]
2 years ago
6

Which number is irrational? a)9.2727… b)√2 c) 5 x √9 d) -37/71

Mathematics
1 answer:
jenyasd209 [6]2 years ago
5 0

Answer:

The answer is B.

Step-by-step explanation:

Irrational number is a number that cannot be written in a fraction-form.

In the option above,

Option A,

9.2727 =  \frac{92727}{10000}

Option B,

\sqrt{2}  =  \sqrt{2}

Option C,

5x \sqrt{9} \\  = 5x \times 3 \\  = 15x \\  = \frac{15x}{1}

Option D,

-  \frac{37}{71}  =  -  \frac{37}{71}

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In one type of state lottery 5 distinct numbers are picked from 1,2,3,...,40 uniformly at random.
belka [17]

Answer: a) 1 / ⁴⁰C₅ b)  0.33

Step-by-step explanation:

a) The sample space consists of all numbers 1-40.

Since any of the number can be taken from the sample space  so each of five 5 distinct numbers we take has equal probability of occurring. So probability of each 5 numbers set we take will be equal to 1 / ⁴⁰C₅

b)

If we pick exactly 3 even number then that means other 2 will be odd.

So, we have sample space of 40 numbers out of which 20 are even and 20 are odd.

Now we have to pick 3 even out of 20 and 2 odd out of 20.

Probability = ²⁰C₃ * ²⁰C₂ / ⁴⁰C₅

Probability= 0.33

4 0
3 years ago
A tank is 5 metre long 3 metre wide and 1 m high. how many litre of water can it hold?<br><br>​
Ratling [72]

Answer:

15,000 liters

Step-by-step explanation:

First, find the volume in meters. 5*3*1=15 meters

1 meter = 1000 liters

(x15)

15 meters = 15000 liters

Hope this helped :D

4 0
2 years ago
Please help fast! Thanks a lot
professor190 [17]

Answer:

92.5

Step-by-step explanation:

Lets say, first number = x


Second number = 3x+7


Total = 49



(x)+(3x+7)= 49


4x+7 = 49


4x = 42


x = 42/4


x= 10.5



x= 10.5


3x+7 = 3(10.5)+7 = 92.5



Hope this helps!!

3 0
3 years ago
Carla drops a carton of eggs. out of 12 eggs, 7 eggs are cracked. as a decimal, what fraction of the eggs are not cracked? [roun
anyanavicka [17]
There are 5 eggs which remained. In a fraction, the eggs which are not cracked is expressed as 5/12. Converting it to decimals, the answer is 0.4166667. Since the answer only requires 2 decimal places, the number has to be rounded off to the hundredths place. Since 6 is more than 5, the value of the hundredths place is added by 1. Hence the final answer is 0.42.
4 0
3 years ago
Read 2 more answers
Help plz asap..... . ​
LenKa [72]

Answer:

Y=1

Step-by-step explanation:

cause 2x0/2 + 4 x 0 + 1 = 1

6 0
3 years ago
Read 2 more answers
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