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Alchen [17]
3 years ago
13

Solve the system of linear equations by elimination. 4x+3y= -5 -x+3y= -10

Mathematics
1 answer:
Georgia [21]3 years ago
5 0

4x + 3y =  - 5 \\ x - 3y = 10 \\  \\ 5x = 5 \\ x = 1 \\  \\ 4 + 3y =  - 5 \\  \:  \: 3y =  - 9 \\ y =  - 3 \\  \\ (1 \:  - 3)
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What is 9/4 in decimal form
postnew [5]

Answer:

<h2>2.25</h2>

Explanation:

2.25 is a decimal and 225/100 or 225% is the percentage for 9/4.

<em>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</em>

<em>Hope I helped!!!</em>

<em>GL :)</em>

8 0
3 years ago
This graph has rotational symmetry about the points
mart [117]

Answer: Answer for figure one is origin (0,0)

Answer for figure two is (2,4) /

Step-by-step explanation:

a) Here we can see that given graph is the equation of cubic function which is

f(-x) = -f(x) that is given function is odd then rotational symmetry point is origin always ,therefore point of rotational symmetry is origin (0,0)

b) The rotational symmetry of  an ellipse is 180 degrees about the center  of  the ellipse .

And here the center of given ellipse is  (2,4) ,therefore its rotational  symmetry is about (2,4) That is if we rotate the given ellipse 180 degrees about (2,4) it will be at its original position.

7 0
3 years ago
What does a residual value of 1.3 mean when referring to the line of best fit of a data set?
attashe74 [19]
The right answer for the question that is being asked and shown above is that: "A data point is 1.3 units above the line of best fit."  a residual value of 1.3 mean when referring to the line of best fit of a data set is that <span>A data point is 1.3 units above the line of best fit.</span>
6 0
3 years ago
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What is the value of x?
prohojiy [21]

Answer:

x = 12 degree

Step-by-step explanation:

3x + 19 + 5x = 115 degree (sum of two interior opposite angles are equal to the third side)

8x + 19 = 115

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x = 12

8 0
3 years ago
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<img src="https://tex.z-dn.net/?f=38%2B7%C2%B7%28x-3%29%3D9%C2%B7%28x%2B1%29" id="TexFormula1" title="38+7&middot;(x-3)=9&middot
AnnZ [28]

38 + 7x - 21 = 9x + 9

Combine like terms.

17 + 7x = 9x + 9

Eliminate a x.

17 = 2x + 9

8 = 2x

x = 4

6 0
3 years ago
Read 2 more answers
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