: Trong mặt phẳng tọa độ , cho tam giác ABC có và là trọng
tâm. Tìm tọa độ điểm C.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

What is the slope of the line (-7,2) (4,6)

Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90° r: four points are always coplanar. s: a decagon has 12 sides. a) a right angle measures 90° or an isosceles triangle has two congruent sides; true. b) a right angle measures 90° and an isosceles triangle has two congruent sides; true. c) a right angle measures 90° and an isosceles triangle does not have two congruent sides; false. d) a right angle measures 90° or an isosceles triangle does not have two congruent sides; true.