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dusya [7]
3 years ago
15

PLEASE, I REALLY NEED HELP!!!

Mathematics
1 answer:
Masja [62]3 years ago
5 0

50 - 55 million year ago. And I think for the first one reptiles were around.

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Show that the dual of the exclusive-OR is equal to its complement.
Rzqust [24]
Solution:XOR: X+Y= XY’ + X’YDual of XOR:= (X +Y’)+(X’+Y)= XX’+XY +X’Y’ +YY’= XY + X’Y’ Complement of XOR (XNOR)= (X+Y)’= (XY’ + X’Y)’=(X’+Y)+(X +Y’)= XX’+ XY + X’Y’+YY’= XY + X’Y’
HOPE IT HELPS



7 0
4 years ago
A survey shows that 45% of the respondents pick option A. Given that 50 people replied, what is the standard error of the propor
QveST [7]
The formula for the standard error is this:
σM = σ / √N

where
σM is the standard error
σ is the standard deviation
N is the number of samples

So,
σM = 0.45 / √50
σM = 0.0636 or 6.36%

The standard error is 0.0636
3 0
3 years ago
Read 2 more answers
The density of mercury is 13.6 grams per cubic centimeter. Complete the steps for converting 13.6 g/cm^3 to kg/m^3
Mama L [17]

1 cubic meter = 100 cm * 100 cm * 100 cm = 1 x 10^6 cc

1 kilogram = 1,000 grams

13.6 g / cc

If we had a cubic meter of mercury, its mass would be (or it would "weigh") 13.6 * 1,000,000 = 13,600,000 grams or 13,600 kilograms.

And so its density would be 13,600 kg / cubic meter.


4 0
3 years ago
A group of students entered the museum at 3:30 pm and came out at 5:15. how long were they in the museum ?
aksik [14]

Answer:

1 hour and 45 minutes

Hope this helped, have a nice day! :)

8 0
3 years ago
What numbers are a distance of 2/3 unit from 1/2 on a number line?
Eddi Din [679]

Answer:  1/6

Step-by-step explanation:

4 0
3 years ago
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