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Nataliya [291]
3 years ago
13

Harlene tosses two number cubes. If a sum of 8 or 12 comes up, she gets 9 points. If not, she loses 2 points. What is the expect

ed value of the number of points for one roll?
Mathematics
2 answers:
Amanda [17]3 years ago
5 0
P(8 or 12) = 1/6
P(not 8 or 12 = 5/6
Let the expected points fro one roll be X.
E(X)=9\times\frac{1}{6}-2\times\frac{5}{6}=-\frac{1}{6}\ points
The answer is -(1/6) points.
kirill115 [55]3 years ago
3 0

Answer:

-(1/6)

Step-by-step explanation:

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erastova [34]

Answer:

See proof

Step-by-step explanation:

      Statements                  Reasons

1. \overline{AEC} bisects \angle DAB,\ \angle 1\cong \angle 2   Given

2. \angle 3\cong \angle 4                Definition of angle bisector

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4. \triangle ABE \cong \triangle ADE               AAS postulate

5. \overline {AB}\cong \overline{AD}             Congruent triangles have congruent corresponding sides

6. \overline{AC}\cong \overline{AC}                Reflexive property of equality

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6 0
3 years ago
Simplify as far as possible.<br>1<br>3cos (180° + x)sin (360° - X)<br>sin (360° + x)cos (180° - x)​
KengaRu [80]

Answer:

See below

Step-by-step explanation:

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sin (360 + x) = sin x

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3cos (180° + x)sin (360° - X)sin (360° + x)cos (180° - x)​

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I am not sure what the question really is, but hopefully the above can steer you in the right direction.

6 0
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Afina-wow [57]

Answer:can you show me a picture?

Step-by-step explanation:i wont beable to tell you until you give me a picture

6 0
2 years ago
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gulaghasi [49]
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The coefficient of just the y term would be 256 because the entire expanded equation looks like this:

y^4+16y^3+96y^2+256y+256
3 0
3 years ago
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Leviafan [203]
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6 0
3 years ago
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