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sammy [17]
3 years ago
5

The equation of a line is 2(y + 1) = 10x + 3. The y-intercept of the line is , and the slope of the line is .

Mathematics
1 answer:
Fantom [35]3 years ago
4 0

Answer:

Slope is 5 and the y-intercept is 1/2 or (0,1/2).

Step-by-step explanation:

The equation of the line is 2(y+1) = 10x + 3. Find the y-intercept and slope by applying the distributive property and using inverse operations to write it in the form y = mx + b.

2(y+1) = 10x + 3                  Multiply 2 into each term

2y + 2 = 10x + 3                 Subtract 2 on both sides

2y = 10x + 1                        Divide by 2

y = 5x + 1/2

The y = mx + b form gives the slope m and y-intercept b. Here y = 5x + 1/2 has slope 5 and y-intercept 1/2.

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Answer:

220 degrees

Step-by-step explanation:

120 degrees + 100 degrees= 220 degrees

5 0
3 years ago
Which of the following problems represents the following:
madam [21]

Answer:

D

Step-by-step explanation:

"Turn around phrase" just means that you are subtracting the last number minus the first number. Subtracting the negative number is written as -(-34.7)

5 0
3 years ago
(7i)(7i)<br>help! please show steps​
exis [7]

Answer:

-49

Step-by-step explanation:

multiply 7 with 7 then i with i and lastly multiply the result numbers

7i × 7i ➡ 7 × 7 = 49

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49 × i^2 = 49i^2

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7 0
3 years ago
In a simple regression analysis (where y is a dependent and x an independent variable), if the y-intercept is positive, then it
Rom4ik [11]

Answer:

m=\frac{S_{xy}}{S_{xx}}  

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}  

\bar x= \frac{\sum x_i}{n}  

\bar y= \frac{\sum y_i}{n}  

And we can find the intercept using this:  

b=\bar y -m \bar x  

On this case the correct answer would be:

E.  none of the above

Since the intercept has no association between the increase/decrease of the dependent variable respect to the independent variable

Step-by-step explanation:

Assuming the following options:

A.  there is a positive correlation between X and Y

B.  there is a negative correlation between X and Y

C.  if X is increased, Y must also increase

D.  if Y is increased, X must also increase

E.  none of the above

If we want a model y = mx +b where m represent the lope and b the intercept

m=\frac{S_{xy}}{S_{xx}}  

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}  

\bar x= \frac{\sum x_i}{n}  

\bar y= \frac{\sum y_i}{n}  

And we can find the intercept using this:  

b=\bar y -m \bar x  

On this case the correct answer would be:

E.  none of the above

Since the intercept has no association between the increase/decrease of the dependent variable respect to the independent variable

3 0
3 years ago
What is the answer to #30 and #31
svetoff [14.1K]

Answer:

30) A) 0 / 15 = 0

31)  A) 0/28 = 0

Step-by-step explanation:

30)

0 / 15 = 0

15/0 undefined

15 + 0 = 15

15 - 0 = 15

Answer:

0 / 15 = 0

31) Answer: A) 0/28 = 0

5 0
4 years ago
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