Please help!!
AD¯¯¯¯¯ is an altitude, and ∠BAC is a right angle. --> given
∠ADB and ∠ADC are right angles. --> Definition of altitude
∠BAC≅∠BDA -> ???
∠BAC≅∠ADC

∠B≅∠B ---> AA Similarity Postulate
∠C≅∠C
ABBD=CBAB ---> ???
(AB)2=(CB)(BD) Cross multiply and simplify.
ACDC=CBAC Polygon Similarity Postulate
(AC)2=(CB)(DC) Cross multiply and simplify.
(AB)2+(AC)2=(AB)2+(CB)(DC) Addition Property of Equality
(AB)2+(AC)2=(CB)(BD)+(CB)(DC) Substitution Property of Equality
(AB)2+(AC)2=(CB)(BD+DC) ---> ???
BD+DC=CB Segment Addition Postulate
(AB)2+(AC)2=(CB)2 Substitution Property of Equality

  see below

Step-by-step explanation:

The figure below shows the selections I would make.

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You can choose "polygon similarity postulate" for the second blank based on that step's similarity to the one two steps down from it.

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Strictly speaking, the distributive property is a property of multiplication over addition. It is not a property of equality.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

for a it would be 24 children.

for b i don't understand the question. is it saying for each individual person they pick 5 reds to 7 greens or is it the whole group. clarify and i hope this can you.

step-by-step explanation: