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I am Lyosha [343]
3 years ago
8

PLEASE. HELPPPPPPPhshdjfnhdhe

Mathematics
1 answer:
arlik [135]3 years ago
6 0

Answer:

x+2y= -10......eqn(i)

3x-y=12.........eqn(ii)

multiply the eqn(ii) by 2

x+2y= -10

6x-y=12

or, 7x=14

or, x=14/7

or, x=2

now, substituting the value of x=2 in eqn(i)

x+2y= -10

or, 2+2y= -10

or, 2y= -10-2

or, 2y= -12

or, y= -12/2

or, y= -6

therefore the equation is proved

You might be interested in
What is the additive inverse of -2 + 8i?
tatuchka [14]

Answer:

2 - 8i

Step-by-step explanation:

The additive inverse of something is basically the opposite of it. Another way to say this is that when you add the additive inverse to -2 + 8i, it will equal 0.

<u>An example:</u>

The additive inverse of 7 is -7 because not only is it the opposite, but also when you add 7 and -7, it equals 0.

<u>To solve</u>

So all you need to do is find the opposite of -2 + 8i. You can write it as:

-(-2 + 8i)  With the negative in the front because we want to find the opposite.

This then equals:

2 - 8i

You can check your answer by adding -2 + 8i and 2 - 8i to see if it equals 0:

(-2 + 8i) + (2 - 8i)  →  and it does equal 0

<u>ANSWER:</u> 2 - 8i

Hope you understand and that this helps with your question! :)

8 0
3 years ago
Equation which i dont like math not no brainly my question 3 (k-12)=k-30
vaieri [72.5K]
3 (k-12) = k-30

3k - 36 = k - 30

3k - k = -30 + 36

2k = 6

k = 3
7 0
3 years ago
Read 2 more answers
Please help me with my work give brainlessly
Anestetic [448]

Answer:

Volume = 684 in^3

Step-by-step explanation:

To start, the equation for Volume = L*W*H

So, lets begin with the cube on the top, all of its sides are 6 inches in length, so do:

6*6*6 to get the volume of just it

216

Next. lets get the rectangular prism.

6*6*13

468

Last, combine these.

684 in^3

5 0
3 years ago
A car is purchased for $27,500. After each year, the resale value decreases by 35%. What will the resale value be after 5 years?
e-lub [12.9K]

Answer:

$3,190.80

Step-by-step explanation:

yr 1:

27500 x .35 = 9625

27500 - 9625 = 17875

yr 2:

17875 x .35 = 6256.25

17875 - 6256.25 = 11618.75

yr 3:

11618.75 x .35 = 4066.5625

11618.75 - 4066.5625 = 7552.1875

yr 4:

7552.1875 x .35 = 2643.265625

7552.1875 - 2643.265625 = 4908.921875

yr 5:

4908.921875 x .35 = 1718.12265625

4908.921875 - 1718.12265625 = 3190.79921875

6 0
4 years ago
Read 2 more answers
I need help with geometry
Ede4ka [16]

Answer:

corresponding angles

the angles are equal

equation: 9x+8 = 4x+18

x=2

angle measurements: 26⁰

Step-by-step explanation:

solve your equation

9x+8 = 4x+18

subtract 4x from each side

5x + 8 = 18

subtract 8 from each side

5x = 10

divide by 5

x = 2

insert x=2 into original equations to make sure you get the same answer.

9(2) + 8 = 26

4(2) + 18 = 26

8 0
3 years ago
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