Answer:
The answer to this question is: B [-2√5]
Step-by-step explanation:
First, Find both numbers that can accommodate with each of the radicals.
√20
10 and 2
5 and 2 and 2
√80
10 and 8
5 and 2 and 4 and 2
5 and 2 and 2 and 2 and 2
After this is what they'll look like.
√5,2,2 - √5,2,2,2,2
Group numbers of pairs
√5,<u>2,2 </u>- √5,<u>2,2</u>,<u>2,2</u>
<u>For every pair, bring out the #'s, but only one survives, and comes out.</u>
2√5 - 4√5
= -2√5
This is your answer! Hope this helped!
Answer:
31
Step-by-step explanation:
$23.25 divided by $0.75 is 31.
Answer:
Step-by-step explanation:
Given that:
The number of observations is:
6, 10, 12
If we are to use a simple random sampling without replacement, then we will have:
(6,10) (6,12) (10,12)
Here;
the sample size n = 2
The population size N = 3
For (6,10) ; The sample mean =
=
= 8
For (6,12) ; The sample mean =
=
= 9
For (10, 12) ; The sample mean =
=
= 11
The probability distribution of sample mean(x) is:
X 8 9 11
P(X=x)
Thus, the probability that the sample mean is larger than 8 is:
P(X> 8) = P(X = 9) + P(X + 11)
P(X> 8) =
P(X > 8) =
P(X> 8) =
Answer:
121 unit^2.
Step-by-step explanation:
The area = height/2 * ( sum of the opposite parallel lines)
= h/2(BC + AD
h = BF = 14 - 3 = 11 units.
BC = 13 - 5 = 8 units.
AD = 16 - 2 = 14 units.
Area = (11/2)(8 + 14)
= 5.5 * 22
= 121 unit^2.