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slava [35]
3 years ago
11

Can you tell me whether this represents a function or not? (For both questions, just say ‘Yes or No’)

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
8 0

Answer:

No for both

Step-by-step explanation:

If 2 x values that are the same but different y values for them then its not a function

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The wheels on a car have a diameter of 28 inches. How many full
Lorico [155]

Answer:

27

Step-by-step explanation

14 is the radius so multiply by pi to get 87.96

then turn 200 fee into in which is 2400in

and divide 2400 by 87.96

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Plz help for 13 a and b
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A) to find the difference you have to subtract one from the other (53-(-41)=91)

b) 15
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Which is the smallest number in this set of numbers?
WITCHER [35]
C is correct because A is 2.82 and B is 2.8
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4 years ago
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Lie detectors have a 15% chance of concluding that a person is lying even when they are telling the truth. a bank conducts inter
Otrada [13]
Part A:

Given that lie <span>detectors have a 15% chance of concluding that a person is lying even when they are telling the truth. Thus, lie detectors have a 85% chance of concluding that a person is telling the truth when they are indeed telling the truth.

The case that the lie detector correctly determined that a selected person is saying the truth has a probability of 0.85
Thus p = 0.85

Thus, the probability that </span>the lie detector will conclude that all 15 are telling the truth if <span>all 15 applicants tell the truth is given by:

</span>P(X)={ ^nC_xp^xq^{n-x}} \\  \\ \Rightarrow P(15)={ ^{15}C_{15}(0.85)^{15}(0.15)^0} \\  \\ =1\times0.0874\times1=0.0874
<span>

</span>Part B:

Given that lie detectors have a 15% chance of concluding that a person is lying even when they are telling the truth. Thus, lie detectors have a 85% chance of concluding that a person is telling the truth when they are indeed telling the truth.

The case that the lie detector wrongly determined that a selected person is lying when the person is actually saying the truth has a probability of 0.25
Thus p = 0.15

Thus, the probability that the lie detector will conclude that at least 1 is lying if all 15 applicants tell the truth is given by:

P(X)={ ^nC_xp^xq^{n-x}} \\ \\ \Rightarrow P(X\geq1)=1-P(0) \\  \\ =1-{ ^{15}C_0(0.15)^0(0.85)^{15}} \\ \\ =1-1\times1\times0.0874=1-0.0874 \\  \\ =0.9126


Part C:

Given that lie detectors have a 15% chance of concluding that a person is lying even when they are telling the truth. Thus, lie detectors have a 85% chance of concluding that a person is telling the truth when they are indeed telling the truth.

The case that the lie detector wrongly determined that a selected person is lying when the person is actually saying the truth has a probability of 0.15
Thus p = 0.15

The mean is given by:

\mu=npq \\  \\ =15\times0.15\times0.85 \\  \\ =1.9125


Part D:

Given that lie detectors have a 15% chance of concluding that a person is lying even when they are telling the truth. Thus, lie detectors have a 85% chance of concluding that a person is telling the truth when they are indeed telling the truth.

The case that the lie detector wrongly determined that a selected person is lying when the person is actually saying the truth has a probability of 0.15
Thus p = 0.15

The <span>probability that the number of truthful applicants classified as liars is greater than the mean is given by:

</span>P(X\ \textgreater \ \mu)=P(X\ \textgreater \ 1.9125) \\  \\ 1-[P(0)+P(1)]
<span>
</span>P(1)={ ^{15}C_1(0.15)^1(0.85)^{14}} \\  \\ =15\times0.15\times0.1028=0.2312<span>
</span>
8 0
4 years ago
10. Make Sense and Persevere The flag of the
kumpel [21]

Answer:

  • s=\frac{P}{3}
  • Dimensions of the flag:

       lenght=6.65\ ft\\\\width=3.5\ ft

  • Area of the flag: 23.275\ ft^2

Step-by-step explanation:

<em><u>The missing figure of the exercise is attached.</u></em>

<em><u /></em>

We know that the perimeter of the triangle is given by:

P= 3s

Where "s" is the side lenght of the triangle.

Solving for "s", we get:

s=\frac{P}{3}

Therefore, if the perimeter of the triangle is 126 inches, its side length is:

s=\frac{126\ in}{3}\\\\s=42\ in

 Since  1\ ft=12\ in, we know that "s" in feet is:

s=(42\ in)(\frac{1\ ft}{12\ in})=3.5\ ft

The area of a rectangle can be calculated with this formula:

A=lw

Where "l" is the lenght and "w" is the width

We can observe in the figure that the lenght and the width of the flag are:

l=1.9s\\w=s

Then, the dimensions of the flag are:

l=1.9(3.5\ ft)=6.65\ ft\\w=3.5\ ft

And the area is:

A=(6.65\ ft)(3.5\ ft)=23.275\ ft^2

3 0
3 years ago
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