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n200080 [17]
3 years ago
10

What is the value of x in the solution of the system of equations 3x + 2y = 12 and 5x – 2y = 42

Mathematics
1 answer:
uysha [10]3 years ago
8 0

Answer:

x = 27/4

Step-by-step explanation:

3x + 2y = 12 and 5x – 2y = 42

Add the two equations together to eliminate y

3x + 2y = 12

5x – 2y = 42

-----------------------

8x            = 54

Divide each side by 8

8x /8 = 54/8

x = 27/4

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Alex17521 [72]

Answer:

u-shaped; y-intercept (0,6); symmetrical with respect to the y-axis

Step-by-step explanation:

Given that y = 2x² + 6

The graph would be the shape of that of a parabola. It can be u shaped or n shaped depending on the value of the coefficient of a comparing with the standard equation y = ax² + bx + c. If a > 0, it is u shape and if a < 0, it is n shape.

For this question, since a > 0 it would be u shaped and the intercept can be gotten by putting x = 0.

Therefore y = 0² + 6 = 0

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3 0
4 years ago
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Evgesh-ka [11]

Answer:

(Down Below)

Step-by-step explanation:

Plug in the value of x in the left column for all the values in the equation. I will do a couple for you.

Since -4 is the value of x, substitute it into the equation for x.

y= -4-5=-9

-1

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0

y=0-5=-5

You can do the rest. You got this! Comment if you need more help!

3 0
3 years ago
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