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sveticcg [70]
3 years ago
14

Solve the system of equation. 5x+2y=7 and -2x+6y=9. Enter the y-coordinate of the solution.

Mathematics
1 answer:
Oliga [24]3 years ago
3 0

Answer:  \bold{y=\dfrac{59}{34}}

<u>Step-by-step explanation:</u>

   5x + 2y = 7   ⇒   2(5x + 2y = 7)   ⇒   10x +  4y  =  14

  -2x + 6y = 9  ⇒   5(-2x + 6y = 9)  ⇒  -10x + 30y = 45

                                                                         34y = 59

                                                                       <u>÷34   </u> <u>÷34 </u>

                                                                             y = 59/34

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Answer:

60 and 40 or 120 and 20

Step-by-step explanation:

60 x 2=120

40 x 3=120

60 x 40=2400

120 x 1=120

20 x 6=120

120 x 20=2400

You can try a few others, but no others have an lcm of 120

4 0
4 years ago
A line passes through point (-2, 5) and has a slope of 3. Points A(x 3) and B(-2, y lie on the line.
il63 [147K]

Answer:

x = -8/3

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Step-by-step explanation:

Finding the equation of the line:

y = 3x +c

Substituting (-2,5) into 'y=3x+c':

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Hence,

y = 3x + 11

For finding x:

Substituting (x, 3) into 'y = 3x +11':

3 = 3x + 11

3x = -8

x = -8/3

For finding y:

Substituting (-2, y) into 'y = 3x + 11':

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3 years ago
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Ksenya-84 [330]

Answer:

ABD= 58

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Step-by-step explanation:

complementary = 2 angles equal 90 degrees.

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3 years ago
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