What multiplies to 3969 and adds to 126. Please help. I tried 49 and 81 but that did not work.

1 answer:

6 0

<span>Factors of 3969:
1,3,7,9,21,27,49,63,81,147,189,441,567,1323,3969
-1,-3,-7,-9,-21,-27,-49,-63,-81,-147,-189,-441,-567,-1323,-3969 is this what you mean

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The average of 3 of your quiz grades are 17 points. Two of your quizzes is 14 and 19 points. Write and solve an equation to find

dsp73

(17*3) --- to find the total points of the 3 quizzes
17*3=51
the third quiz grade=51-14-19=18
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Explanation

Part A

We can use the formula below to find the mean.

$\text{Mean}=\sum ^{}_{}(\frac{fx}{f})$

We will then have;

$\begin{gathered} \text{Mean = }\frac{5\times3+4\times1+5\times1+6\times2+7\times2+8\times4+9\times3+10\times1}{19}=\frac{15+4+5+12+14+32+27+10}{19} \\ =\frac{119}{19}=6.2632 \end{gathered}$

Mean = 6.2632

Part B

Since the data set is odd.

$\begin{gathered} \text{Median}=\frac{(n+1)}{2}^{th}\text{observation} \\ =\text{Value of }\frac{\text{(19+1)}}{2}^{th}\text{observation} \\ =\text{value of 10th observation} \end{gathered}$

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1 year ago

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Step-by-step explanation:

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