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iogann1982 [59]
2 years ago
11

Will a random sample always accurately predict the outcome for the entire population? Why or why not? Explain your reasoning.

Mathematics
1 answer:
zvonat [6]2 years ago
6 0

Answer:

Me lo podrías desir en español

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Find the value of k if x-1 is the factor of x ^ 2 + x + k​
Ne4ueva [31]

Answer:

k = -2

Step-by-step explanation:

Recall from the Factor Theorem that if (<em>x</em> - <em>a</em>) is a factor of a polynomial <em>P</em>, then P(<em>a</em>) must equal 0.

Our polynomial is:

\displaystyle P(x) = x^2 + x + k

And we know that (<em>x</em> - 1) is a factor.

Therefore, by the Factor Theorem, P(1) must equal 0. Hence solve for <em>k: </em>

<em />\displaystyle \begin{aligned} P(1) = 0 & = (1)^2 + (1) + k \\ \\ 0 & = 2 + k \\ \\ k & = -2\end{aligned}

In conclusion, the value of <em>k</em> is -2.

4 0
2 years ago
Two 6-sided dice are rolled. what is the probability that the sum of the two numbers on the dice will be greater than 9?
AVprozaik [17]
What combination of numbers are needed in order to get a sum of 9?
        It can be:
             •  First die is 6 , second die is 3 
             •  First die is 3 , second die is 6
             •  First die is 4 , second die is 5
             •  First die is 5 , second die is 4

How many possible combinations are made? Yep, 4 possible combinations.

Recall the formula for probability
       Probability =   \frac{Number of desired outcomes}{Number of all possible outcomes}

There are 4 desired number of outcomes.
How about the total possible outcomes?
     • How many numbers are possible to appear when the first die is rolled?
        Answer: 6
     • What about the second die?
        Answer: Also 6
     • Therefore, total possible outcomes = 6 * 6 = 36 outcomes

You can now solve for the probability.

      Probability = \frac{4}{36} =  \frac{1}{9} or approximately 11.11%
3 0
2 years ago
How do you solve it <br> (9/5)<br> A 45<br> B 55<br> C 126<br> D 4
aleksley [76]
It looks like a division problem, but the answer is when ypu multiply the yto sa A is the answer.
3 0
3 years ago
Two digit subtraction with regrouping
algol13

Answer:

WHAT IS D QUESTION?????

Step-by-step explanation:

6 0
2 years ago
Helpp i am really bad with math
Brut [27]

Answer:

1. 4y-12

2. c

For #1 you distribute the 4 to the y and the 3. 4 times 3 equals 12.

For #2 you factor out the 3 and you get 3(5x+1)

7 0
3 years ago
Read 2 more answers
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