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Mars2501 [29]
2 years ago
15

Triangle RST is translated 2 units left and then reflected over the y-axis.

Mathematics
2 answers:
Sergeu [11.5K]2 years ago
7 0

Answer:

A and B

Step-by-step explanation:

on edge 2020

aev [14]2 years ago
6 0

Answer:

.

Step-by-step explanation:

a reflection over the y-axis and then a translation 2 units right

a 180degree rotation about the origin, then a translation 2 units right, and then a reflection over the x-axis

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A golfer keeps track of his score for playing nine holes of golf​ (half a normal golf​ round). His mean score is 8080 with a sta
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Answer:

Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and 11\sqrt2 respectively.

Step-by-step explanation:

Given that,

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For the second 9 holes Y:

E(Y) = 80

SD(Y)=13

For the sum W=X+Y, the following properties holds for means , variance and standard deviation :

E(W)=E(X)+E(Y)

     and

V(W)=V(X)+V(Y)

⇒SD²(W)=SD²(X)+SD²(Y)        [ Variance = (standard deviation)²]

\Rightarrow SD(W)=\sqrt{SD^2(X)+SD^2(Y)}

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            and

∴SD(W)=\sqrt{SD^2(X)+SD^2(Y)}

              =\sqrt{11^2+11^2}

               =\sqrt{2.11^2}

               =11\sqrt2

Therefore the mean and standard deviation of his total score if he plays a full 18 holes are 160 and 11\sqrt2 respectively.

                                               

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