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Flauer [41]
3 years ago
8

Assume that voltages in a circuit vary between 6 volts and 12 volts, and voltages are spread evenly over the range of possibilit

ies, so that there is a uniform distribution. Find the probability of the given range of voltage levels. In each case, draw a sketch and leave answers as a fraction. a. Greater than 10 volts b. Less than 11 volts c. Between 6.5 volts and 8 volts

Mathematics
1 answer:
Veseljchak [2.6K]3 years ago
7 0

Answer:

a) P(X>10) =1-P(X

b) P(X

c) P(6.5

In the figure attached we have the illustration for the probability for each part.

Step-by-step explanation:

For this case we define the random variable X as the voltages in a circuit  and the distribution for X is given by:

X \sim Unif (a= 6, b=12)

Part a

we want this probability:

P(X>10)

We can use the cumulative distirbution function given by:

F(x) = \frac{x-a}{b-a}, a\leq X \leq b

And using the complement rule we have this:

P(X>10) =1-P(X

Part b

We want this probability:

P(X

And using the cumulative distirbution function we got:

P(X

Part c

We want this probability:

P(6.5

And using the cumulative distirbution function we got:

P(6.5

In the figure attached we have the illustration for the probability for each part.

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2 years ago
The area of a circle is 616 cm². Find its circumference. Use π = 22/7
kirill [66]

Area = PI x r^2

Circumference = 2 x r x PI

Using area find the radius )r)

616 = 22/7 x r^2

Divide both sides by 22/7:

196 = r^2

Take the square root of both sides:

r = 14 cm

Now find the circumference:

2 x 14 x 22/7 = 88 cm

Answer : A) 88 cm

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1 year ago
For the equation 17h+6=40, select the appropriate property of equality to move the constant term to the right side of the equati
jasenka [17]

Answer:

Option B.

Step-by-step explanation:

The given equation is

17h+6=40

We need to find the property of equality to move the constant term to the right side of the equation.

In the given equation 6 is the constant term on the left side.

Using subtraction property of equality, subtract 6 from both sides.

17h+6-6=40-6

17h=34

So, the appropriate property of equality to move the constant term to the right side of the equation is Subtraction Property of Equality.

Therefore, the correct option is B.

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3 years ago
A TV is on sale for $125 off. The sale price is $875.
Evgesh-ka [11]

Let's call the original price o and the sale price s. Given the information in the problem, we can say:

o - s = 125

(The sale price subtracted from the original price is the sale on the product, which we know is 125.)


We know the value of s, which is 875. If we substitute this into the equation we found, we can find o, as shown below:

o - s =125

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o - 875 = 125

  • Substitute in 875 for s

o = 1000

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The original price is $1,000.


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