Questions in Grade High-school

Questions in Grade High-school

[Free] Is the coordinate (-2, -4) a solution to the equation \( y = 3x - 2 \)?

[Free] Recall that the symbol z represents the complex conjugate of z . If z = a + bi and w = c + di, prove the statement. z 2 = z2 Working from the left-hand side, simplify the expression into the standard complex form.

[Free] What equipment is needed to be a timekeeper in badminton?

[Free] What is 2.24 rounded to the nearest tenth?

[Free] Using the formula: \[ \text{NaHCO}_3 (s) + \text{HC}_2\text{H}_3\text{O}_2 (aq) \rightarrow \text{NaC}_2\text{H}_3\text{O}_2 (aq) + \text{H}_2\text{O} (l) + \text{CO}_2 (g) \] If I used 0.100 L of 0.83 M \(\text{HC}_2\text{H}_3\text{O}_2 (aq)\) (0.83 mol per 1 L of solution), how much carbon dioxide would be produced?

[Free] Why did George Washington call the Congress under the Articles of Confederation "a shadow without a substance"?

[Free] Three times the sum of a number and six is greater than four times the number decreased by two. Define the variable.

[Free] If \( mn = 5 \) and \( m - 3n = 8 \), what is \( m^2n - 3mn^2 \)?

[Free] Solve for \( y \) in the equation: \[ 3x + 2y = 5 \]

[Free] Thomas invested $8,500 for one year. Part of the money was invested at 6% and the rest at 9%. The total interest earned was $667.50. How much did Thomas invest at the 6% rate?