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BaLLatris [955]
1 year ago
8

Find angle X. I am not sure if it should add up to 360 degrees or 180 degrees

Mathematics
1 answer:
ExtremeBDS [4]1 year ago
5 0

Answer:

195

Step-by-step explanation:

Since this figure is a quadrilateral you would be subtracting the inner angles from 360

360-87-40-38=195

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A company determines an employee's starting salary according to the number of years of experience, as detailed in the table.
Pachacha [2.7K]

Answer:

59,000 I believe (I'm bad at math sorry in advance)

6 0
1 year ago
Solve for x: 4/x+4/x2-9=3/x-3
anzhelika [568]

Answer:

x =1/12(1-√(97) )

Step-by-step explanation:

4 0
3 years ago
Which lists the fractions 9/5, 13/8, and 1 and 3/5 in order from least to greatest?
aleksklad [387]
3/5, 1, 13/8, 9/5 this is the answer to your question
5 0
3 years ago
A four year old is going to spin around with his arms stretched out 100 times. From past experience, his father knows it takes a
Sati [7]

Answer:

P(X \geq0.55) \leq 0.22

Step-by-step explanation:

Using central Limit Theorem (CLT), The sum of 100 random variables;

Y=X_1+X_2+...+X_{100} is approximately normally distributed with

Y ~ N (100 × \frac{1}{3^2} ) = N ( 50, \frac{100}{9} )

The approximate probability that it will take this child over 55 seconds to complete spinning can be determined as follows;

N ( 50, \frac{100}{9} )

P(Y>55) =P(Z>\frac{55-50}{10/3})

P(Y>55) =P(Z>1.5)

P(Y>55) =\phi (-1.5)

P(Y>55) =0.0668

Using Chebyshev's inequality:

P(|X-\mu\geq K)\leq \frac{\sigma^2}{K^2}

Let assume that X has a symmetric distribution:

Then:

2P(X-\mu\geq K)\leq) \frac{\sigma^2}{K^2}

2P(X \geq \mu+K)\leq) \frac{\sigma^2}{K^2}

2P(X\geq0.5+0.05)\leq \frac{\frac{1}{\frac{3^2}{100} } }{0.05^2}               where: (\sigma^2 = \frac{1}{3^2/100})

P(X \geq0.55) \leq 0.22

6 0
3 years ago
Students are selling hand-made magnets at the school craft fair. One magnet costs $0.30, 2 magnets cost $0.43, 3 magnets cost $0
Sliva [168]
1 = 0.30 
2 = 0.43
3 = 0.56
4 = 0.69 
5 = 0.82
6=  0.95 

To find by how much you are adding every time , you have to subtract the 2 magnet cost (0.43) from the 1 magnet cost (0.30) and this equals 0.13
6 0
3 years ago
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