It could be either.
1 + 1 + 1 = 3, which is prime
2 + 2 + 2 = 6, which is composite
Answer:
And we can use the complement rule and we got:
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".
Solution to the problem
Let X the random variable that represent the bank account balances of a population, and for this case we know the distribution for X is given by:
Where and
Since the distribution of X is normal then the distribution for the sample mean is given by:
And we can use the z score formula given by:
And using this formula we got:
And we can use the complement rule and we got:
Answer:
Yes
Step-by-step explanation:
Triangle inequality theorem states that a triangle can exist if
a + b > c; a + c > b; b + c > a
a = 2; b = 10; c = 11
2 + 10 = 12; 12 > 11.
2 + 11 = 13; 13 > 10.
10 + 11 = 21; 21 > 2.
Answer:
hehe
Step-by-step explanation:
Form two simultaneous equations with the information provided:
10P + 4R = 210, P = no. of boxes of pens, R = number of boxes of rubber bands
10 is the cost of a box of pens; multiply this by P will give you the total cost of all the boxes of pens bought.
4 is the cost of a box of rubber bands; multiply this by R will give you the total cost of all the boxes of rubber bands bought.
We can also say:
P + R = 24, as 24 boxes (cartons) were bought in total.
Solve simultaneously:
P = 24 - R
Sub' this into 10P + 4R = 210 to give:
10(24 - R) + 4R = 210
240 - 10R + 4R = 210
-6R = -30
R = 5
and so:
P = 24 - (5) = 19
19 boxes of pens
5 boxes of rubber bands