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Nitella [24]
3 years ago
6

Help me with this question please

Mathematics
1 answer:
stich3 [128]3 years ago
4 0

Answer:

(-1,9)

Step-by-step explanation:

union contains both sets.

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1 (06.06 LC
Anika [276]

The question is incomplete. Here is the complete question.

A cell phone company is interested in the relationship between the number of texts per minute for their customers (y) and customer age. Based on the data collected, the least-squares regression line is y=3.27+2.14x, where x is the number of years by which age exceeds 12. Which of the following statements best describes the meaning of the slope of the least-squares regression line?

a. For each increase in age of 1 year, the estimated number of texts per minute increases by 3.27.

b. For each increase in age of 1 year, the estimated number of texts per minute increases by 2.14.

c. For each increase of one text per minute, there is an estimated increase in age of 3.27 years.

d. For each increase of one text per minute, there is an estimated increase in age of 2.14 years.

e. The slope has no meaning because the units of measure for x and y are not the same.

Answer: b. For each increase in age of 1 year, the estimated number of texts per minute increases by 2.14.

Step-by-step explanation: The <u>least-squares</u> <u>regression</u> is a method of fitness, i.e., it fits a data set of number into an equation.

In this case, the relationship between number of texts per minute and customer age is given by a line equation:

y=3.27+2.14x

in which, y represents the number of texts per minute and x is the age.

In a line equation, slope is the measure of steepness, i.e., how inclined the line is.

In the least squares regression line, slope is 2.14 and it means, in each additional year, the number of texts increase by a factor of 2.14, which is the correct alternative.

5 0
3 years ago
Select all the situations that describe a probability of 1/6 of drawing a red marble out the bag.
konstantin123 [22]
The correct answer is E (6 red, 4 yellow, 8 green, 6 blue, 12 white).

E) 6 + 4 + 8 + 6 + 12 = 36 (total marble count)
6 red/36 total marbles
simplify to find the probability ⬇️
(6/6=1; 36/6=6) = 1/6 chance of picking red
6 0
3 years ago
1
Xelga [282]

Answer:

y = \dfrac{1}{2}x-4

Step-by-step explanation:

<h2>Equation of line in slope y-intercept form:</h2>

       \sf slope = m =\dfrac{1}{2}\\\\Point (2, -3) ; x_1 = 2 \ \& y_1 = -3\\\\\boxed{\bf y - y_1 =m(x -x_1)}

         \sf y - [-3] = \dfrac{1}{2}(x - 2)\\\\y + 3 =  \dfrac{1}{2}x - 2*\dfrac{1}{2}\\\\y + 3 = \dfrac{1}{2}x-1\\\\

                \sf y = \dfrac{1}{2}x - 1 - 3\\\\ y =\dfrac{1}{2}x-4

6 0
2 years ago
Diego’s dog weighs more than 10 kilograms and less than 15 kilograms. Select the set of inequalities that must be true if w is t
hichkok12 [17]

Answer:

Step-by-step explanation:

Correct

w > 10

w > 10

Incorrect

w < 10

w < 10

Incorrect

w > 11

w > 11

Incorrect

w < 11

w < 11

Correct

w < 15

w < 15Correct

w > 10

w > 10

Incorrect

w < 10

w < 10

Incorrect

w > 11

w > 11

Incorrect

w < 11

w < 11

Correct

w < 15

w < 15Correct

w > 10

w > 10

Incorrect

w < 10

w < 10

Incorrect

w > 11

w > 11

Incorrect

w < 11

w < 11

Correct

w < 15

w < 15Correct

w > 10

w > 10

Incorrect

w < 10

w < 10

Incorrect

w > 11

w > 11

Incorrect

w < 11

w < 11

Correct

w < 15

w < 15Correct

w > 10

w > 10

Incorrect

w < 10

w < 10

Incorrect

w > 11

w > 11

Incorrect

w < 11

w < 11

Correct

w < 15

w < 15Correct

w > 10

w > 10

Incorrect

w < 10

w < 10

Incorrect

w > 11

w > 11

7 0
2 years ago
If there are 16 boys and 48 girls in a room, fill out all of the possible ratios of boys to girls that could be made.
kondor19780726 [428]
These are all of the possible ratios:

- 1:3
- 8:24
-4:12
-2:6

Please vote my answer brainliest. thanks!
5 0
3 years ago
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