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vladimir2022 [97]
3 years ago
7

How can you be sure that you have listed all of the proper factors of a number

Mathematics
1 answer:
Alexxandr [17]3 years ago
5 0
Do the math of all multplications facts and see if there is more
 or look it up and see if you left some out

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What’s the rule ? help :)
Gre4nikov [31]

Answer:

For every x y is cut in half

5 0
3 years ago
Classify ( 3 − 1 3 ) as rational or irrational, and explain your reasoning.
Jet001 [13]

Answer:

rational

Step-by-step explanation:

the equation above would be -10 making it an integer

integers are rational

4 0
3 years ago
Toxaphene is an insecticide that has been identified as a pollutant in the Great Lakes ecosystem. To investigate the effect of t
Likurg_2 [28]

Answer:

This data suggest that there is more variability in low-dose weight gains than in control weight gains.

Step-by-step explanation:

Let \sigma_{1}^{2} be the variance for the population of weight gains for rats given a low dose, and \sigma_{2}^{2} the variance for the population of weight gains for control rats whose diet did not include the insecticide.

We want to test H_{0}: \sigma_{1}^{2} = \sigma_{2}^{2} vs H_{1}: \sigma_{1}^{2} > \sigma_{2}^{2}. We have that the sample standard deviation for n_{2} = 22 female control rats was s_{2} = 28 g and for n_{1} = 18 female low-dose rats was s_{1} = 51 g. So, we have observed the value

F = \frac{s_{1}^{2}}{s_{2}^{2}} = \frac{(51)^{2}}{(28)^{2}} = 3.3176 which comes from a F distribution with n_{1} - 1 = 18 - 1 = 17 degrees of freedom (numerator) and n_{2} - 1 = 22 - 1 = 21 degrees of freedom (denominator).

As we want carry out a test of hypothesis at the significance level of 0.05, we should find the 95th quantile of the F distribution with 17 and 21 degrees of freedom, this value is 2.1389. The rejection region is given by {F > 2.1389}, because the observed value is 3.3176 > 2.1389, we reject the null hypothesis. So, this data suggest that there is more variability in low-dose weight gains than in control weight gains.

8 0
3 years ago
Solve 5x − 6y = −38 <br> 3x + 4y = 0
Leto [7]

Answer:

x = -76 , y = 57

Step-by-step explanation:

5x - 6y = -38

3x + 4y = 0

------------------

use 4 to multiply equation 1

5x(4) - 6y(4) = - 38(4)

20x -24y = -152

----------------------

use 6 to multiply equation 2

3x(6) + 4y(6) = 0(6)

18x + 24y = 0

------------------------

20x - 24y = -152

18x + 24y = 0

----------------------

2x = -152

----------------

divide 2 by both sides

x = -76

--------------------

to find y, slot in the of x to either equation 1 or 2

--------------------------------

equation 2

3x + 4y = 0

3(-76) + 4y = 0

------------------------

-228 + 4y = 0

4y = 228 - 0

4y = 228

---------------------

divide both sides by 4

----------------------------------

y = 57

for this type of question, you can use

  1. substitution method
  2. elimination method
  3. graphical method

i used substitution method

hope it helps

7 0
3 years ago
The price of kiwis can be determined by the equation P=1.10n, where P is the price and n is the number of kiwis. What is the con
kiruha [24]

Answer:

1.10

Step-by-step explanation:

P = 1.10n

the price = 1.10 * the number of kiwis

The constant of proportionality is k= 1.10 because for each kiwi unit we pay another 1.10 at the total price.

5 0
2 years ago
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