Write the equation into the standard form of the equation of the hyperbola: 62 + 20x + 4x^2 + 5y − y^2 = 0

Find the center, vertices, foci, eccentricity and equation of directrices for the
hyperbola.

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Multiplying fractions by whole number 5 x 1/3=?

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?