Yuri has 2/7 carrots if she eats the half how much would she has left? answers i choose from: 2 2/7 1/7 4/7 2 asap

Explain how you can use the triangle sum theorem to find the measures of the angles in an equilateral triangle. the angles of an equilateral triangle are . let the measure of each angle be x. then, by the triangle sum theorem, x + x + x = 3x = ° solving for x gives x = °

Ineed i do not understand i'm only 8

What is the standard form of -5x^2+2x^4-11+x^3+3x