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irina [24]
4 years ago
14

There are two coins in a bag. for coin 1, p(h) = ½ and for coin 2, p(h) = 1/3. your friend chooses one of the coins at random an

d tosses it 5 times.
a. what is the probability of observing at least 3 heads?
b. you ask your friend: “did you observe at least 3 heads?”. your friend replies, “yes”. what is the probability that coin 2 has been chosen?
Mathematics
1 answer:
lana [24]4 years ago
8 0
The answer is 3 to this question
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Which letter on the number line represents the number 2.3?
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How do the central ideas and tone of the speech reflect Satanta’s cultural values

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Using the right triangle below, find the cosine of angle A.
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it would be the Adjacent side (8) over the Hypotenuse, or the longest side which is 10. an easy way to remember this is CAH or Cosine=Adjacent/Hypotenuse

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4 years ago
(x-5y,-3):(1,3y-x) find value of x and y<br>Please help me to solve thiss!!​
11Alexandr11 [23.1K]

Answer:

x=11, y=2

Step-by-step explanation:

We can set 1 equal to x-5y and then solve for x. and y.

x = 5y+1

y = x-1/5

We can use this information and plug back in the values for 3y-x or x-5y.

We can set -3 = 3y-x or 1 = x-5y.

To solve for x using -3 = 3y-x we can swap the values of x and y which would make it -3 = 3(x-1/5)-5(x-1/5)+1.

We can do a bit of algebra which would get us x = 11.

Knowing that y = x-1/5 we can plug in 11 for x. y = 11-1/5.

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x=11, y=2

3 0
2 years ago
The legs of an isosceles right triangle both measure 10 inches. Find the length of the hypotenuse.
gavmur [86]

Answer:

14.14

Step-by-step explanation:

10^2 + 10^2 = c^2

100 + 100 = c^2

200 = c^2

c = 14.14

3 0
3 years ago
Which expression is equivalent to square root 55x^7 y^6/11x^11 y^8? Assume x &gt; 0 and y &gt; 0.
morpeh [17]
The first step for solving this expression is to reduce the fraction with 11.
\sqrt{ \frac{5 x^{7} y^{6}  }{ x^{11}  y^{8} } }
Now reduce the fraction with x^{7}.
\sqrt{ \frac{5 y^{6} }{ x^{4} y^{8}  } }
Reduce the fraction one more time with y^{6}.
\sqrt{ \frac{5}{ x^{4} y^{2}  } }
To take the root of a fraction,, we must take the root of the numerator and denominator separately. This rule will change the expression to the following:
\frac{ \sqrt{5} }{ x^{2} y}
Since we cannot simplify this fraction any further,, the final answer is going to be \frac{ \sqrt{5} }{ x^{2} y}.
Let me know if you have any further questions.
:)
3 0
3 years ago
Read 2 more answers
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