A bag contains red and blue marbles, such that the probability of drawing a blue marble is
2 answers:
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If О is the center of a circle then:
<span>
OA = OB = OC = OD [radii]
AB = AH + HB = 15 + 15 = 30 </span>⇒ AB = CD
<span>
So </span>ΔAOB ≅ ΔCOD [SSS rule] ⇒ x = OH = 16 units.
<span>
OA = OB = OC = OD [radii]
AB = AH + HB = 15 + 15 = 30 </span>⇒ AB = CD
<span>
So </span>ΔAOB ≅ ΔCOD [SSS rule] ⇒ x = OH = 16 units.
[ Answer ]
[ Explanation ]
- Simplify:
------------------------------------------
- Apply Perfect Square Formula (
=
+ 2ab +
) a = 5x, b = 2
+ 2 · 5x · 2 +
:
+ 20x + 4
- Answer
+ 20x + 4