Can I get a jump start in solving this

  • Thread starter Thread starter dr_pooool
  • Start date Start date
  • Tags Tags
    Jump
AI Thread Summary
The discussion revolves around determining the nature of a system of equations: independent, inconsistent, or dependent. The equations provided are 3x – 4y = 8 and 0.75x – y = -2. A participant suggests solving the equations to identify their relationship, leading to the conclusion that the system is inconsistent. The final calculation shows that the equations do not intersect, confirming the inconsistency. Understanding these concepts is crucial for solving systems of equations effectively.
dr_pooool
Determine whether the following system is independent, inconsistent, or dependant.
3x – 4y = 8

0.75x – y = -2
 
Physics news on Phys.org
Are you saying that you do not know what "independent", "dependent", or "inconsistent" mean? I think you would be better served by looking up the definitions yourself in your textbook.

There are a number of ways of determining whether or not a system of equations is "independent" or "consistent" but the simplest is to try to solve the equations and see what happens.
 
Is this correct?

3x – 4y = 8
.75x - y = -2
so,
-4(0.75x – y) = (-2)-4
-3x + 4y = 8
0=16 This is inconsistent
 
Yep, you've got it!
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top