Questions in Grade High-school

Questions in Grade High-school

[Done] What country entered the Revolutionary War as a French ally in 1779?

[Done] What was the primary purpose of the Southern implementation of Black Codes?

[Done] Use the substitution method to solve the following system of equations: 1. [tex]y = 2x - 5[/tex] 2. [tex]4x - y = 7[/tex] Attempted solution: Substitute [tex]y[/tex] from equation 1 into equation 2: [tex]4x - (2x - 5) = 7[/tex] Simplify the equation: [tex]2x + 5 = 7[/tex] [tex]2x = 2[/tex] [tex]x = 1[/tex] What was the mistake in the initial attempt?

[Done] Factor completely: \[ x^4 - 81 \]

[Done] Factor completely: \[ 1000 + 27y^3 \]

[Done] Factor completely: \[ x^4 + 8x^2 - 9 \]

[Done] How many different ways can 6 students be seated in a row?

[Done] works to protect the rights of women. NAACP PETA NOW PPF

[Done] Substitution method: \[ 5x - 3y = -11 \] \[ x - 2y = 2 \]

[Done] In a state, license plates consist of four letters and two digits. How many different plates are possible?