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3 years ago

Is the relation below a function? -3 -1 -1 3 у 0 1 2 3

Mathematics

2 answers:

wolverine [178]3 years ago

8 0

Answer:

<h3>I would say no!</h3>

Step-by-step explanation:

<h3>cause we cannot determine the rule of mapping so y is no an image of x</h3>

qaws [65]3 years ago

5 0

Answer:

I believe it would be "y"

Step-by-step explanation:

Function, in mathematics, an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

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In a math class with 28 students, a test was given the same day that an assignment

Kipish [7]

Answer:

Probability that a student who passed the test did not complete the homework = 0.07

Step-by-step explanation:

Given:

Total number of students = 28

Number of students who passed the test = 18

Number of students who completed the assignment = 23

Number of students who passed the test and also completed the assignment = 16

To find: probability that a student who passed the test did not complete the homework

Solution:

Probability refers to chances of occurrence of some event.

Probability = number of favorable outcomes/total number of outcomes

Let A denotes the event that students passed the test and B denotes the event that students completed the assignment

P(A only) = $P(A)-P(A\cap B)$

Here,

$P(A)=\frac{18}{28}\,,\,P(A\cap B)=\frac{16}{28}$

So,

$P(A\,\,only)=\frac{18}{28}-\frac{16}{28}=\frac{2}{28}=\frac{1}{14}=0.07$

Therefore,

probability that a student who passed the test did not complete the homework = 0.07

7 0

2 years ago

What is the equation of the line best fit for the following data? Round the slope and y-intercept of the line to three decimal p

kari74 [83]

Answer:

$y=1.383x-1.526$

Step-by-step explanation:

The given data table is

x : 4 7 10 12 13

y : 5 7 12 14 18

We need to find the equation of the best fit line.

The general form of a best fit line is

$y=mx+b$ .... (1)

where, m is slope and b is y-intercept.

$m=\frac{\sum_{i=1}^nx_iy_i-n\overline{x}\overline{y}}{\sum_{i=1}^nx_i^2-n\overline{x}^2}$

$b=\overline{y}-b\overline{x}$

Using the graphing calculator we get

$m=1.38321\approx 1.383$

$b=-1.52555\approx -1.526$

Substitute m=1.383 and b=-1.526 in equation (1).

$y=1.383x-1.526$

Therefore, the equation of best fit line is $y=1.383x-1.526$ .

4 0

3 years ago

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Hamal has a new part time job bagging groceries after school. The equation y=10x+50 show the relationship between his hours of w

Alborosie

Answer: fdbs

Step-by-step explanation:

6 0

2 years ago

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khan academy is giving me only this explanation but won't go into detail and I cannot understand it for the life of me. how do I

Setler [38]

Answer:

12 - 4i

Step-by-step explanation:

-2i ( 2+6i)

Distribute

-2i * 2 + -2i *6i

-4i - 12 i^2

We know that i^2 = -1 so replace it

-4i - 12(-1)

-4i + 12

Then put in the order a+bi where the real number comes first and the imaginary number comes last

12 - 4i

7 0

2 years ago

Need help with questions 32-33

velikii [3]

The answer for 32 is 6 and the answer for 33 is -3

4 0

2 years ago

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