cho góc bẹt AOB. Trên cùng một nửa mặt phẳng bờ AB, vẽ 3 tia OM, ON, OC sao cho AOM=BON<90. Tia OC lsf tia phân giác của MON. Chứng minh rằng OC vuông góc với Ab

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?