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leva [86]
3 years ago
12

Bro this makes no sense can someone explain

Mathematics
2 answers:
pantera1 [17]3 years ago
7 0

Answer:

x=110^o

Step-by-step explanation:

If AB = AD, then you have that triangle ABD is an isosceles triangle (it has two equal sides). If it is isosceles, then the angles opposite to angles those equal sides must be equal. Then angle ADB = 35^o. and by the property of all internal angles of a triangle have to add to 180^o, we get that:

x=180^o-35^o-35^o=110^o

VladimirAG [237]3 years ago
3 0

Answer:

x = 110 degrees, y = 49 degrees.

Step-by-step explanation:

We have adjacent isosceles triangles here, so

x = 180 - 2(35) = 110 degrees, and

2y  + 82 = 180

so y = (180 - 82) / 2 = 49 degrees.

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3 years ago
Final exam scores are normally distributed with a mean of 74 and a standard deviation of 6. Approximately, what percentage of fi
notka56 [123]

Answer:

81.86%

Step-by-step explanation:

We have been given that final exam scores are normally distributed with a mean of 74 and a standard deviation of 6.

First of all we will find z-score using z-score formula.

z=\frac{x-\mu}{\sigma}

z=\frac{68-74}{6}

z=\frac{-6}{6}=-1

Now let us find z-score for 86.

z=\frac{86-74}{6}    

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Now we will find P(-1<Z) which is probability that a random score would be greater than 68. We will find P(2>Z) which is probability that a random score would be less than 86.

Using normal distribution table we will get,    

P(-1

P(2>Z)=.97725  

We will use formula P(a to find the probability to find that a normal variable lies between two values.

Upon substituting our given values in above formula we will get,

P(-1

P(-1

Upon converting 0.81859 to percentage we will get

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3 0
3 years ago
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