3 years ago

Ive been looking at this for a long time please help.

Mathematics

1 answer:

Mrrafil [7]3 years ago

3 0

Answer:

x = 2 and y = 7. This is 2 unknown and 2 equation...It's simply to combine. as below.

Step-by-step explanation:

-6x + 2y =2---> simplify like -3x + y = 1 then column add with -4x - y = -15---> so -7x = -14---->x = 2 and -4 (2) - y = -15 ---> -8 + 15 = y....so y = 7..

Answer is x = 2 and y = 7...

You might be interested in

Icated (Q#1-4). 2. Solve by substitution; x+3y + 4) 3x - 5y = 8 3 (3x+4) aytla

puteri [66]

Answer:

See explanation

Step-by-step explanation:

Assuming your system is:

$x + 3y = 4$

$3x - 5y = 8$

Then make x the subject in the first equation to get:

$x = 4 - 3y$

Put this equation into the second equation to get:

$3(4 - 3y) - 5y = 8$

$12 - 9y - 5y = 8$

$- 9y - 5y = 8 - 12$

$-14y = - 4$

$y = \frac{ - 4}{ - 14} = \frac{2}{7}$

This means that:

$x = 4 - 3 \times \frac{2}{7}$

$x = 4 - \frac{6}{7} = \frac{22}{7}$

4 0

3 years ago

Plz help meeee -28=n(-7)

In-s [12.5K]

Answer:

n=4

Step-by-step explanation:

-28 divided by -7 is 4

4 0

3 years ago

Read 2 more answers

What is the solution to -2(8x-4) 2x+5?

-Dominant- [34]

Answer:

that would be -2200 sorry if im wrong

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

True or false? the point at which a tangent line meets a circle is called the point of tangency

gregori [183]

(breaths in) True, The point at which the circle and the line intersect is the point of tangency.

5 0

3 years ago

Read 2 more answers

If we transform y=x^2 by 5 units to the left and 8 units ups, what is the vertex of the resulting parabola?

sertanlavr [38]

Answer: y = (x + 5)² + 8

Step-by-step explanation:

y = x²

left 5 units: y = (x + 5)²

up 8 units: y = (x + 5)² + 8

7 0

4 years ago

Read 2 more answers