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Basile [38]
3 years ago
12

On a certain function machine, an input of 3 has an output of -6. An input of -2 has an output of 4. An input of 0 has an output

of 0. Which of the following phrases describes the function rule?
Multiply the input by -1 and then add 2.
Multiply the input by -2.
Multiply the input by -1 and then subtract 3.
Multiply the input by 2.
Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

Answer:

The answer is multiplying by -2

Step-by-step explanation:

Yuki888 [10]3 years ago
4 0
Answer:

The answer is multiply the imput -2
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Let x be a random variable representing percentage change in neighborhood population in the past few years, and let y be a rando
Lisa [10]

Answer:

m=\frac{2506.833}{604.833}=4.1447  

Nowe we can find the means for x and y like this:  

\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833  

\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833  

And we can find the intercept using this:  

b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644  

So the line would be given by:  

y=4.1447 x +44.644  

Step-by-step explanation:

m=\frac{S_{xy}}{S_{xx}}  

Σx = 77, Σy = 587, Σx2 = 1593, Σy2 = 70,533, and Σxy = 10040.

Where:  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}  

With these we can find the sums:  

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=1593-\frac{77^2}{6}=604.833  

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=10040-\frac{77*587}{6}=2506.833  

And the slope would be:  

m=\frac{2506.833}{604.833}=4.1447  

Nowe we can find the means for x and y like this:  

\bar x= \frac{\sum x_i}{n}=\frac{77}{6}=12.833  

\bar y= \frac{\sum y_i}{n}=\frac{587}{6}=97.833  

And we can find the intercept using this:  

b=\bar y -m \bar x=97.833-(4.1447*12.833)=44.644  

So the line would be given by:  

y=4.1447 x +44.644  

5 0
3 years ago
How effective is the regression model for these data? not effective, because only 13.4% of the variation in the data is explaine
Elden [556K]

Answer:45

Step-by-step explanation:

3 0
3 years ago
You are in charge of food shopping for a party. You need to buy snacks and soda. A bag of snacks costs $2 and a pack of soda $3.
eduard

Answer:

2 bags

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Complete the statement below to explain how this model shows that 1/3÷1/5=5/3
Galina-37 [17]
To divide by a fraction, multiply by the reciprocal of that fraction.

1/3 • 5/1 or 1/3 • 5


Calculate the product straight across.

1/3 • 5/1 = 5/3



3 0
4 years ago
-8.11 + 4.52 what is the answer comment and you get 11 points please and thank you!
mixer [17]
The answer is, -3.59
4 0
3 years ago
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