Questions in mathematics

Questions in mathematics

[Done] Mario drew a model to represent one third of the space in his bookcase. How could Mario draw a model to represent all the space in his bookcase?

[Done] Translate into an equation: 1. Five times the sum of twice a number, \( x \), and six is thirty. Equation: \[ 5(2x + 6) = 30 \] Find the number: \( x = \) 2. The difference between a number, \( x \), and eleven is three. Equation: \[ x - 11 = 3 \] Find the number: \( x = \) Solve and check: 3. \[ 4y - 3 = 12 + 3(y - 2) \] Solve for \( y \): \( y = \) 4. \[ 10x - 2(4x - 7) = 28 \] Solve for \( x \): \( x = \)

[Done] At the concession stand of a school football game, sandwiches cost $1.50 and a bottle of water costs $0.90. The school sells 40 sandwiches and 80 bottles of water. a) What percent of the money came from sales of sandwiches? b) What percent of the concessions sold were bottles of water?

[Done] Write in function form: \[ x + y = 6 \]

[Done] What is the 50th term of the arithmetic sequence 4, 10, 16, 22, … ?

[Done] Who is SohCahToa Joe in CSI Geometry: Trigonometry? I need the answers.

[Done] Convert \(\frac{20}{10}\) to a mixed number.

[Done] Solve for \( x \): \[ 6x^2 + 12x + 13 = 2x^2 + 4 \]

[Done] What does "13 squared" mean and what is the solution?

[Done] Add and simplify: \(\frac{9}{16} + \frac{1}{2} = ?\)