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nadezda [96]
3 years ago
6

Please solve

Mathematics
1 answer:
raketka [301]3 years ago
7 0

Step 1. Simplify 1/3x to x/3

-x/3 > 5

Step 2. Multiply both sides by 3

-x > 5 * 3

Step 3. Simplify 5 * 3 to 15

-x > 15

Step 4. Multiply both sides by -1

x < -15

Your answer is A.

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What is 3 1/8 - 1 1/8 =​
aalyn [17]

Answer:

2

Step-by-step explanation:

3 1/8 - 1/8 = 3

3-1 = 2

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An expression is shown.
Veseljchak [2.6K]

Answer:

3x + y - 3

Step-by-step explanation:

<u>Like Terms</u>: In algebra, like terms are terms that have the same variables and powers.

To simplify this expression and get an expression that is eual to 5x + 3y - 2x - 2y - 3 I used <em>like terms</em> :

(5x - 2x) + (3y - 2y)

(5x - 2x = <em>3x</em>) + (3y - 2y = <em>1y or y</em>)

3x + y

Then we add the <em>- 3 </em>at the end giving us:

<u><em>3x + y - 3</em></u>

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Factor the expression over the complex numbers.<br><br> x2+20
vovangra [49]
X²+20=0
x=±√(-80)/2
x=±4i√5/2=2i√5

factorised it is then
(x+2i√5)*(x-2i√5)
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Identify the domain and range of the graph.
Bad White [126]

Answer:

Domain (x): (-∞ , -1) ∪ (-1 , 3) ∪ (3 , ∞)

Range (y): (3 , ∞) ∪ (-∞ , ∞) ∪ (-∞ , 3) -> (-∞ , ∞)

Step-by-step explanation:

Domain (x): (-∞ , -1) ∪ (-1 , 3) ∪ (3 , ∞)

Range (y): (3 , ∞) ∪ (-∞ , ∞) ∪ (-∞ , 3) -> (-∞ , ∞)

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2 years ago
Use the data in the table below and a graphing calculator to describe how a linear model compares to a quadratic model. Analyze
Delvig [45]

The quadratic model and the linear model of the table of values are the same

<h3>The linear model of the data</h3>

To do this, we make use of a graphing calculator.

From the graphing calculator, we have the following summary:

  • Sum of X = 0
  • Sum of Y = 113
  • Mean X = 0
  • Mean Y = 22.6
  • Sum of squares (SSX) = 10
  • Sum of products (SP) = 28

The regression equation is

y = mx + b

Where

m = SP/SSX = 28/10 = 2.8

b = MY - bMX = 22.6 - (2.8*0) = 22.6

So, we have:

y = 2.8x + 22.6

See attachment for graph (1)

<h3>The quadratic model of the data</h3>

To do this, we make use of a graphing calculator.

From the graphing calculator, we have the following summary:

  • a = 0
  • b = 2.8
  • c = 22.6

0 X^2 +2.8 X +22.6

The regression equation is

y = ax^2 + bx + c

So, we have:

y = 0x^2 + 2.8x + 22.6

See attachment for graph (1)

<h3>Why both graphs look the same</h3>

The graphs look the same because when the quadratic model is simplified, it gives the linear model.

This in other words mean that:

The quadratic model and the linear model of the table of values are the same

Read more about regression at:

brainly.com/question/7656407

#SPJ1

7 0
1 year ago
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