What is the missing number in the pair of equivalent ratios? 5 : 12 = ? : 60

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Talia grouped the terms and factored out the gcf of the groups of the polynomial 15x2 – 3x – 20x + 4. her work is shown below. (15x2 – 3x) + (–20x + 4) 3x(5x – 1) + 4(–5x + 1) talia noticed that she does not have a common factor. what should she do?

Round to the nearest ten thousandth.i dont get this