Which of the following equations are equations of circles? choose all that apply. (x+5)* +(y + 2+ = -4 2x +y+15% - y+3=0 x +y+2x+10v-5=0 3x + 3y1 + 12x + 307 - = 0 x2 - ya + 20x +2y +9=0

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Which expression is rational? 6. , square root two, square root 14, square root 49