Addition-subtraction method 8.92x-5.42y=3.41 5.83x+1.07y=2.37

1 answer:

4 0

We want to use the Addition-Subtraction method to solve
8.92x - 5.42y = 3.41 (1)
5.83x + 1.07y = 2.37 (2)

We shall eliminate y from the two equations by Addition.
Multiply (1) by 1.07 and multiply (2) by 5.42 to obtain
1.07*(8.92x - 5.42y) = 1.07*3.41
9.5444x - 5.7994y = 3.6487 (3)

5.42*(5.83x + 1.07y) = 5.42*2.37
31.5986x + 5.7994y = 12.8454 (4)

Add (3) and (4) to obtain
9.5444x - 5.7994y + 31.5986x + 5.7944y = 3.6487 + 12.8454
41.143x = 16.4941
x = 0.4009

From (2), obtain
1.07y = 2.37 - 5.83x
= 2.37 - 5.83*0.4009
= 0.0328
y = 0.0307

Answer:
x = 0.4009
y = 0.0307

You might be interested in

Jim is designing a seesaw for a children's park. The seesaw should make an angle of 30° with the ground, and the maximum height

defon

Answer:

2 meters

Step-by-step explanation:

To find the maximum length of the seesaw, we just need to use the sine relation its angle with the ground.

The opposite side to the angle of 30° is the maximum height of 1 meter, and the hypotenuse is the length of the seesaw. So we have that:

$sin(30) = height / length$