In δabc, m∠abc = 40°, bl is the angle bisector of ∠b with point l∈ ac . point m ∈ ab so that lm ⊥ ab and n ∈ bc so that ln ⊥ bc find the angles of △mnl

It can help to draw a diagram.

∆LBM ≅ ∆LBN by the hypotenuse-angle (HA) theorem of congruence of right trianges. Then LM ≅ LN and BM ≅ BN by CPCTC. Quadrliateral BMLN is a kite,  so diagonal MN ⊥ BL.

Of course, angles BLN and BLM are the complements of the halves of bisected angle B, so are both 70°. And angles LMN and LNM are the complements of those, so are both 20°.

∆MNL is an isosceles triangle with base angles of 20° and an apex angle of 140°.

answer: slight chance that it will happen

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.