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reganjones89
29.06.2019 •
Mathematics
Alison is playing a video game. at the end of each level, the player is given either a bag of gold or a magic wand. alison says that the probability of getting a bag of gold is 30%. to test this, she plays the game 50 times and calculates the relative frequency of each outcome. outcome bag of gold magic wand relative frequency 0.32 0.68 select from the drop-down menus to correctly complete each statement. the relative frequency of getting a bag of gold is 30%. alison's claim about the theoretical probability is likely to be . further, this means that the theoretical probability of getting a magic wand is most likely .
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Ответ:
Outcome Bag of Gold Magic Wand
Relative frequency 0.32 0.68
The relative frequency of getting a bag of gold is reasonably close
.32 is close to 30% so
Alison's claim about the theoretical probability is likely to be 2true
Further, this means that the theoretical probability of getting a magic wand is most likely 31 - 30% = 70%
Ответ:
w = x and ΔABC ~ ΔFED
Step-by-step explanation:
we know that
In a right triangle
If sin(A)=cos(B)
then
Angles A and B are complementary
so
A+B=90°
In this problem
If sin(y°) = cos(x°)
then
Angles y and x are complementary
so
x+y=90°
therefore
In the triangle FED
w+y=90° > by complementary angles
In the triangle ABC
z+x=90° > by complementary angles
so
w=x and z=y
Remember that
If two triangles are similar, then the corresponding angles are congruent
In this problem
The corresponding angles of triangles ABC and FED are congruent
therefore
ΔABC ~ ΔFED