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Gelneren [198K]
3 years ago
5

2 Points

Mathematics
2 answers:
masya89 [10]3 years ago
6 0
The answer is 120. Because inscribed angle is Half of the arc measure. Double 60 and we get 120.
chubhunter [2.5K]3 years ago
5 0

Answer:

240

Step-by-step explanation:

Inscribed Angle = 1/2 Intercepted Arc

60 = 1/2 XZ

Multiply each side by 2

120 = XZ

But we want XYZ

XZ + XYZ = 360

120 + XYZ = 360

XYZ = 360 -120

XYZ = 240

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4. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. In a
borishaifa [10]

675 people will have score between 85 and 120

Step-by-step explanation:

Given

Mean = 100

SD = 15

If we have to find percentage of score between two values we have to find the z-score for both values and then area under the curve for both values

z-score is given by:

for a value x:

z-score = \frac{x-mean}{SD}

So,

For 85:

z-score = z_1 = \frac{85-mean}{SD}\\ = \frac{85-100}{15}\\=\frac{-15}{15}\\=-1

z-score = z_2 = \frac{120-mean}{SD}\\ = \frac{120-100}{15}\\=\frac{20}{15}\\=1.3333

Now we have to find the area under the curve for both values of z-score. z-score tables are used for this purpose.

So,

For z1 : 0.1587

For z2: 0.9082

The area between z11 and z2:

z_2-z_1 = 0.9082-0.1587=0.7495

So the probability of score between 85 and 120 is 0.7495

As the sample is of 900 people, the people with scores between 85 and 120 will be:

900*0.7495 = 674.55 people

Rounding off to nearest whole number

675 people will have score between 85 and 120

Keywords: Probability, SD

Learn more about probability at:

  • brainly.com/question/10978510
  • brainly.com/question/11007026

#LearnwithBrainly

4 0
3 years ago
HELPPPPP !!!!! Answers ????
tamaranim1 [39]
All 3 sides are all equal
7 0
3 years ago
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After knee surgery, your trainer tells you to return to your jogging program slowly. He suggests
sveticcg [70]

If you find a wrong thing on answer respond me

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Find the value of a:<br> a(x+3)&lt;5x+15-x<br> a=
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Answer:

a= 4x+15/x+3

Step-by-step explanation:

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3 years ago
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Sales at a book store increased from 5000 to 10000. This year sales dicreased to 5000 from 10000.
erastovalidia [21]
It's basically 5,000*2=10,000
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6 0
3 years ago
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