Questions in mathematics

Questions in mathematics

[Done] Explain what the variables represent in an addition or subtraction expression.

[Done] What times what equals 576?

[Done] One group of people purchased 10 hot dogs and 5 soft drinks for $35. Another group purchased 7 hot dogs and 4 soft drinks for $25.25. What is the cost of a single hot dog? What is the cost of a single soft drink?

[Done] Solve the system of equations by substitution: \[ \begin{align} -5x + y &= -3 \\ 3x - 8y &= 24 \end{align} \] Find the values of \(x\) and \(y\).

[Done] Solve for the factor of \( m \) in the equation: \[ 3m(2m + 9) = 0 \]

[Done] What whole number is equivalent to \(\frac{16}{1}\)?

[Done] What value of \( k \) makes the equation \(|2k + 2| = 16\) true?

[Done] Solve for \( y \): \[ -2(x + 3y) = 18 \]

[Done] Compute without using a calculator: \(\sin\left(\frac{9\pi}{4}\right) \tan\left(\frac{7\pi}{3}\right)\)

[Done] What value of \( x \) makes the equation \(\sqrt{x-5} = 4\) true?