Which of the following expressions could be used to estimate the difference between -12.34 and -4.8? -12 - 5 -12 + 5 -12 - 4 -12 + 4

The hypotenuse of an isosceles right triangle is $14\sqrt 2$. what is the area of the triangle?

What is the length of the unknown leg in the right triangle ?

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.