this is a spinner used in a board game. what is the probability that the spinner will land on a multiple of 3 and 4
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The vertex where the two triangles touch forms a pair of vertical angles, so that the angles on opposites sides of the vertex are congruent. You're shown that two legs of both triangles are congruent. All this tells you that the two triangles are isosceles, and furthermore that they are similar because of the congruence of their "base" angles.
This means
Since she has seven key the probability that the first one will open the door is
if it takes three attempts to open the door,the probability is
if the three attempts would not work
then the probability that the fourth attempt will open the door is
hope this helps
if it takes three attempts to open the door,the probability is
if the three attempts would not work
then the probability that the fourth attempt will open the door is
hope this helps