Questions in mathematics

Questions in mathematics

[Done] Marisol is painting on a piece of canvas that has an area of 180 square inches. The length of the painting is \(1 \frac{1}{4}\) times the width. What are the dimensions of the painting?

[Done] 768 is 60% of what number?

[Done] How do I solve \(4\cos^2 x - 1 = 0\)?

[Done] Explain when each method—graphing, substitution, and linear combinations—is a good method to find a solution to a system of equations.

[Done] Janine wants a necklace that is 45 beads long. How many red and blue beads does she need if the ratio is 1:4?

[Done] Towns A and B are 400 miles apart. If a train leaves A heading toward B at 50 miles per hour, how long will it take before it meets another train traveling from B to A at a speed of 30 miles per hour?

[Done] What is the balance on a deposit of $1,150 that earns 9% interest compounded annually for 2 years?

[Done] Round 0.01123 to the nearest hundredth.

[Done] Which of the expressions does not contain any like terms? A. \(2x^2 + 3x - 4x + 2\) B. \(xy + yz - 17\) C. \(x^2 + x^2 - 2x - x^2\) D. \(4 + 8 + y\)

[Done] What's the vertex form of [tex]y = x^2 - 20x + 15[/tex]?