Questions in mathematics

Questions in mathematics

[Done] How do I show the work for 5.4 divided by 39.42?

[Done] What is the value of \( 12 \times \sqrt{2} \)?

[Done] What is \(1 \frac{6}{7} - 1 \frac{4}{11}\)?

[Done] A triangle, \(\Delta ABC\), is reflected across the x-axis to have the image \(\Delta A'B'C'\) in the standard \((x,y)\) coordinate plane; thus, \(A\) reflects to \(A'\). The coordinates of point \(A\) are \((c,d)\). What are the coordinates of point \(A'\)?

[Done] \[ F(x) = 4x^2 - 3x + 2kx + 1 \] What is the value of \( k \) for which the function has two zeros? Can someone show me step by step?

[Done] How to solve the equation: \[ 4n^2 - 3n - 7 = 0 \]

[Done] What is \(3\frac{1}{8} + 1\frac{2}{5}\)?

[Done] What is the common denominator for the fractions \(\frac{1}{2}\) and \(\frac{1}{4}\)?

[Done] Alexa drew a rectangle with an area of 36 square centimeters. The rectangle she drew has the smallest perimeter possible for this area. What are the length and width of the rectangle she drew?

[Done] If \(7 + 3x = 22\), then \(2x =\) ?