Please help I’ll mark you brainlist

∠ MDF = 39°

Step-by-step explanation:

∠ MDH = 90°, so

∠ MDF + ∠ FDH = 90 , substitute values

2r + 59 + 6r + 111 = 90 , that is

8r + 170 = 90 ( subtract 170 from both sides )

8r = - 80 ( divide both sides by 8 )

r = - 10

Thus

∠ MDF = 2r + 59 = 2(- 10) + 59 = - 20 + 59 = 39°

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!