30 points, im pretty hopeless at this point and i know someone is just gonna rob the points anyways

given: △kmn, abcd is a square
kn=a,
mp
⊥
kn
, mp=h
find: ab

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.