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grin007 [14]
4 years ago
5

The table below shows four systems of equations:

Mathematics
1 answer:
fredd [130]4 years ago
5 0
<span>System 1 and system 2, because the second equation in system 2 is obtained by adding the first equation in system 1 to two times the second equation in system 1

This is the correct answer because not only is it true but it also follows the property of solving systems of equations with adding the equations. To prove that it is true:

2nd equation in system #2 = 1st equation in system #1 + 2(2nd equation in system #1)

 </span>10x − 7y = 18 == 4x − 5y = 2 + 2(<span>3x − y = 8)
10x - 7y = 18 == 4x - 5y = 2 + 6x - 2y = 16
10x = 7y = 18 == 10x - 7y = 18</span>
You might be interested in
Determine the maximum number of zeros and the x-intercepts of the function: (x^2-x-2)(3x-2)
schepotkina [342]

Answer:

3

Step-by-step explanation:

note that zeros and x-intercepts are the same with different names

There are 2 zeros from the quadratic factor and 1 from the linear factor.

To find them equate the function to zero, that is

(x² - x - 2)(3x - 2) = 0

(x - 2)(x + 1)(3x-2) = 0 ← factoring the quadratic

equate each factor to zero and solve for x

x - 2 = 0 ⇒ x = 2

x + 1 = 0 ⇒ x = - 1

3x - 2 = 0 ⇒ x = \frac{2}{3}


4 0
3 years ago
3-6 x (3 4th dived by 3 0) 2
nadezda [96]

Step-by-step explanation:

3 - 6 x ( 3/4 ÷ 3) 2

is this the correct equation? I'll solve it as long as i have the correct equation, but unsure as to if the 3 and 0 are supposed to be a fraction, decimal or multiplied etc

7 0
3 years ago
PLEASE HELP ME PLEASE
SCORPION-xisa [38]
<h3>Step-by-step explanation:</h3><h3>(2/3)x - 2 = 7</h3>

(2/3)x = 7 + 2

(2/3)x = 9

2x = 9 × 3

x = 27/2

:. x = 13 1/2

7 0
3 years ago
What is the value of the x-coordinate of point W? Enter your answer as a decimal to the nearest o.5.
Rus_ich [418]

Answer:

The value of the x-coordinate is -3.5.

Step-by-step explanation:

To determine the x-coordinate you have to look at how far the point is on the x-axis which is the sideways line of the graph.

Point W is between -3 and -4 on the x-axis which would make the x-coordinate -3.5.

Hope this helps!

5 0
3 years ago
Pls plz plz i need the answers help me
EastWind [94]

Answer:

24 units squared

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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