Questions in mathematics

Questions in mathematics

[Free] Simplify the expression: \[ 6x - 2y + x + 5y \]

[Free] The quotient of 2 times a number \( k \) and -2.6 is 12.

[Free] Why is "decrease" both an integer and an operation in math?

[Free] What is 15 divided by 390?

[Free] A car moving at 35 miles per hour travels a distance of 51.3 feet each second. About how far does the car travel in 7.1 seconds?

[Free] Two factors of 30 add up to 9. What are they?

[Free] What is the answer for the problem 480 divided by \(\frac{1}{3}\)?

[Free] Find the equation of the parabola given the focus (1, 4) and the directrix \(y = 1\). Then, sketch the graph.

[Free] Two long strips of paper are each 2 inches wide, and they overlap so that the angle between the strips is 30 degrees. What is the number of square inches in the area of the parallelogram formed by the overlap?

[Free] Solve the system by elimination: \[ 9x - 3y = 3 \] \[ 3x + 8y = -17 \]