Questions in Grade High-school

Questions in Grade High-school

[Answered] Solve the following system of equations by elimination: 1. \( x - y - 2z = 4 \) 2. \( -x + 2y + z = 1 \) 3. \( x + y - 3z = 11 \)

[Answered] Prove that [tex]2n + 1 \leq 2n[/tex] for [tex]n \geq 3[/tex].

[Answered] Both Jefferson and Jackson used the slogan "equal rights for all, special privileges for none." In what respects did neither one achieve his goals?

[Answered] Between which pair of numbers is the exact product of 379 and 8?

[Answered] Is a satellite orbiting Earth free from Earth's gravity? Why or why not?

[Answered] Balls 1 and 2 are each thrown horizontally from the same height above level ground, but ball 2 has a greater initial velocity after leaving the thrower's hand. If air resistance is negligible, how do the accelerations of the balls and the times it takes them to hit the ground compare?

[Answered] How do I solve the equation \(\frac{x-4}{y+2}=5\)?

[Answered] Explain why the value of \( k \) cannot be equal to 0.

[Answered] The monthly cost \( c \) of Marge's phone plan is given by the equation \( c = 40 + m \), where \( m \) is the number of extra minutes she uses in that month. Name the slope and y-intercept in this situation, and explain what each represents.

[Answered] Explain why the graph [tex]y < x[/tex] cannot lie in Quadrant II.