Questions in Grade High-school

Questions in Grade High-school

📝 Answered - Skeletal muscles need a rich blood supply to provide them with A. oxygen. B. carbon dioxide. C. water. D. none of the above.

📝 Answered - What is \(3\sqrt{24} - 4\sqrt{54}\)?

📝 Answered - Use the substitution method to solve the system of equations: 1. [tex]x = 4[/tex] 2. [tex]2x - 3y = -19[/tex]

📝 Answered - Which is an example of a predator-prey relationship? A. The relationship between a duck and a pond of water. B. The relationship between a lion and a zebra. C. The relationship between a bee and a flower. D. The relationship between a hen and a rooster.

📝 Answered - Substitution Method 1) \[ \begin{cases} 3x + y = 7 \\ 4x + 2y = 16 \end{cases} \] 2) \[ \begin{cases} 2x + 2y = 4 \\ x - 2y = 0 \end{cases} \]

📝 Answered - 3. Factor. \[ 9x^2 + 15x \] A. \( x(3x + 5) \) B. \( 3x(3x + 5) \) C. \( 9x(x + 5) \) D. \( 3x^2(3x + 5) \) 4. Factor. \[ 20mn − 30m \] A. \( 2m − 3 \) B. \( 10m(2n − 3) \) C. \( 10mn(2m + 3n) \) D. \( 10n(2m − 3) \) 5. Factor. \[ 8x^2y^2 − 4x^2y − 12xy \] A. \( 4(2xy − 4x^2y − 12xy) \) B. \( 4(8x^2y^2 − x − 12xy) \) C. \( 4x^2y^2(2xy − xy − 3) \) D. \( 4xy(2xy − x − 3) \)

📝 Answered - Use the elimination method to solve the following systems of equations: 1) \[ \begin{align} -4x + y &= -12 \\ 4x + 2y &= 6 \\ \end{align} \] 2) \[ \begin{align} 5x + 2y &= 12 \\ -6x - 2y &= -14 \\ \end{align} \] 3) \[ \begin{align} 5x + 4y &= 12 \\ 7x - 6y &= 40 \\ \end{align} \] 4) \[ \begin{align} 5m + 2n &= -8 \\ 4m + 3n &= 2 \\ \end{align} \]

📝 Answered - Graph the line for this problem: \[ y = 3x + 6 \]

📝 Answered - What are the traits used to classify a virus?

📝 Answered - Oil consumption is increasing at a rate of 1.8% per year. By what factor will oil consumption increase in 6 years? Use the approximate doubling time formula (rule of 70).