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Sliva [168]
3 years ago
6

Is the relation a function? y = x2 + 12x + 31

Mathematics
2 answers:
Leokris [45]3 years ago
7 0
Yes. When graphed each input will only have one output. 
densk [106]3 years ago
5 0

Answer: Yes , y = x^2 + 12x + 31 is a function.

Step-by-step explanation:

  • A relation is said to be a function if each input value (or x-value) corresponds to one unique output value (y-value).

The given relation : y = x^2 + 12x + 31

where , x^2 + 12x + 31 and it a polynomial function .

Also, when we draw the graph of the given function  [see the attachment ], we can see that each value of x corresponds to exactly one unique y-value.

It means it follows the definition of a function.

Thus , the answer is : Yes , y = x^2 + 12x + 31 is a function.

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Solve for the missing variable.<br> 1.)<br> 80/120 =2/x
crimeas [40]

Answer:

x = 3

Step-by-step explanation:

\frac{80}{120} = \frac{2}{x}

Simplify, divide the numerator and denominator by the same number

\frac{80}{120}\\

÷ 40

\frac{2}{3}

\frac{2}{3} = \frac{2}{x}

Cross products

2x = 2 *3\\2x = 6\\/2    /2\\\\x = 3

3 0
2 years ago
What is 7179.086667 rounded to the nearest hundredth?
professor190 [17]

Answer:

I'm pretty sure it's 7179.1

Step-by-step explanation:

7179.1

3 0
3 years ago
Find the linear regression equation for the transformed data. x=1,2,3,4,5 y=13,19,37,91,253 log y=1.114,1.279,1.568,1.959,2,403
Talja [164]

Answer:

The answer is OPTION (D)log(y)=0.326x+0.687

<h2>Linear regression:</h2>

It is a linear model, e.g. a model that assumes a linear relationship between the input variables (x) and the single output variable (y)

The Linear regression equation for the transformed data:

We transform the predictor (x) values only. We transform the response (y) values only. We transform both the predictor (x) values and response (y) values.

(1, 13) 1.114

(2, 19) 1.279

(3, 37) 1.568

(4, 91) 1.959

(5, 253) 2.403

X            Y           Log(y)

1              13           1.114

2             19         1.740

3             37        2.543

4             91        3.381

5            253      4.226

Sum of X = 15

Sum of Y = 8.323

Mean X = 3

Mean Y = 1.6646

Sum of squares (SSX) = 10

Sum of products (SP) = 3.258

Regression Equation = ŷ = bX + a

b = SP/SSX = 3.26/10 = 0.3258

a = MY - bMX = 1.66 - (0.33*3) = 0.6872

ŷ = 0.3258X + 0.6872

The graph is plotted below:

The linear regression equation is  log(y)=0.326x+0.687

Learn more about Linear regression equation here:

brainly.com/question/3532703

#SPJ10

6 0
2 years ago
Consider the expression 6n^2 + 2n + 3. What is the coefficient of n?
Inessa [10]

Answer:

2

Step-by-step explanation:

The coefficient is the number in front of the variable.

So, in this case, the coefficient of n^2 is 6 and of n is 2.

4 0
3 years ago
6(v+2) - 7v = 6 + 5v​
slava [35]

Answer:

v = 1

Step-by-step explanation:

6(v+2) - 7v = 6 + 5v

open Parentheses

6*v=6v

6*2=12

New equation:

6v + 12 - 7v = 6 + 5v

simplify

12 - v = 6 + 5v

match like terms

6 = 6v

solve

1 = v

4 0
3 years ago
Read 2 more answers
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