PLEASE HELP VERY URGENT Identify the graph of the equation. What is the angle of rotation for the equation?
21x2-8/394+ 13y2 = 225
a. ellipse; 75°
b. hyperbola; -60°
C. ellipse; -30°
d. hyperbola; 90°
Please select the best answer from the choices provided

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total

Tamar is measuring the sides and angles of tuv to determine whether it is congruent to the triangle below. which pair of measurements would eliminate the possibility that the triangles are congruent

Evaluate each expression. determine if the final simplified form of the expression is positive or negative -42 (-4)2 42