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irina [24]
3 years ago
7

The mean and the standard deviation of a normal

Mathematics
1 answer:
Nostrana [21]3 years ago
7 0

Answer: Parameters statistics two

Step-by-step explanation:

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Gene stated that finding 25% of a number is the same as dividing the number by 1/4. Is Gene correct? Explain. *
jeyben [28]

Answer:

Yes, Gene is correct because 1/4 is the same as .25 and .25 turned into a percentage is 25%.  

7 0
3 years ago
Read 2 more answers
40% of an hour in minutes and secs
olga55 [171]

Answer:

<em>40% of an hour </em><em>equals: </em><em>24 minutes </em>

<em>40% of an hour also </em><em>equals: </em><em>1440 seconds</em>

<u>Skills needed: Time Units Conversion</u>

Step-by-step explanation:

1) First, we need to understand how to convert between hours, minutes, and seconds.

There are 60 minutes in 1 hour ==> 1 hour = 60 minutes

There are 60 seconds in 1 minute ==> 1 minute = 60 seconds

- This means that there are 3600 seconds in 1 hour (60*60=3600)

- This also means that there are 60 minutes in 1 hour

2) We are trying to find how many minutes (or seconds) 40% of an hour is.

---> When converted to decimal, 40\%=\frac{40}{100}=0.4

40% of an hour = 0.4 hours

Since there are 60 minutes in an hour, there are 60*0.4 minutes in 0.4 hours. 60*0.4=24 so, 24 minutes in 0.4 hours.

Since there are 3600 seconds in an hour, there are 3600*0.4 seconds in 0.4 hours. 3600*0.4=1440 so, 1440 seconds in 0.4 hours.

3 0
2 years ago
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What does "equivalent" mean in math?
butalik [34]
In math, equivalent means equal to. 
6 0
3 years ago
Maria Louisa looks at a sequence of shapes and records the number of vertices in each of the shapes in the sequence. The first s
seropon [69]

Step-by-step explanation:

arithmetic sequence.

an = an-1 + c = a1 + (n-1)c

c is in our case 2 (every new shape has 2 more vertices).

we have a a1 = 3.

an = 3 + 2(n-1)

so,

a21 = 3 + 2(20) = 3 + 40 = 43

the 21st shadow will have 43 vertices.

7 0
3 years ago
Do 0.3 and 3.0 have the same value. Explain.<br><br> Explain=10 points
just olya [345]
<span>No, 0.3 and 3.0 do not have the same value. The zero in front the decimal point, means that the next digit has a value less than one. The first decimal position is greater than the second decimal position, and it is greater than the fhird decimal positio, and so on; 0.3 is 3/10. The digit 3 in 3.0 has value of 3 units which is greater than 3/10.</span>
3 0
3 years ago
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