Use the elimination method to solve the system of equations

2x+3y=8

x-y=9

Step-by-step explanation:

x = 7 and y = -2

Step-by-step explanation:

2x +3y = 8 (1)

x-y = 9 (2)

multiply (2) by 2

2x-2y = 18(3)

subtract (2) from (3)

-5y = 10

Divide bothside by -5

y = -2

Similarly, multiply (2) by 3

3x-3y = 27(4)

add (1) and (4) together

5x = 35

Divide bothside by 5

x= 7

Therefore, x =7 and y= -2

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.