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belka [17]
3 years ago
9

Answer this please !!!

Mathematics
2 answers:
wariber [46]3 years ago
5 0

Answer:

z = 45 (it is the same angle as x)

y and u = 135

Step-by-step explanation:

45 + 45 = 90

360 - 90 = 270

270/2 = 135

CHECK YOUR WORK:

135 + 135 + 45 + 45 = 360

270 + 90 = 360

360 = 360

Y_Kistochka [10]3 years ago
3 0

Answer:

z = 45

y = 135

u = 135

Step-by-step explanation:

Vertically opposite angles are equal so x and z must be the same.

A circle is 360 degrees so

360 - (45 + 45) = 270

270 / 2 = 135 degrees

This means that y and u must both be 135 as they too are vertically opposite.

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A company has six employees.The salary of five of the employees are P2200,P1300,P800,P940 and P560.When the sixth employee is in
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Answer:

First answer is 1200

Second answer is 900 for each new employee

Step-by-step explanation:

First answer:

2200+1300+800+940+560+x = 7000

5800+x = 7000 subtract 5800 from both sides and you get your answer

x = 1200

Second answer:

x = 900.  Each of the two employees made 900 a month or 1800 a month for both of them.

To find the average we take the total salaries and divide by the number of people to find the average salary.  In this case, we know the average and we know all of the salaries, but two.  We can figure this out.

(7000 + 2x)/8 = 1100  multiple both sides by 8 to clear the fraction/

7000 +2x = 8800  Subtract both sides by 7000

2x = 1800  Divide both sides by 2

x = 900

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2 years ago
Which describes the graph of mc014-1.jpg on [0, 3)? The steps are at –2 from 0 to 1, at –1 from 1 to 2, and at 0 from 2 to 3. Th
Strike441 [17]
1) The graph consists of three horizontal segments, with discontinuities (jumps) at x = 1, x = 2, and x = 3. 
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A horizontal segment at y = - 1 for values x = 1 to 2
A horizontal segment at y = 0 for values x - 2 to 3.


2) To know whether the end points of a segment are defined by the left or the right values you have to look for the circle at the extreme of the segment: if it is a solid dot, means that the end is included, if is is an open circle (white inside) then the end is not included in that segment.

3)  That function is based on the function named integer part because if relates y with the integer part of x.

The integer value function is [x] and it makes correspond y values witht he integer values of x.:

y = 0 witht the integer value of x for x between 0 and 1, excluding 1.

y = 1 with the integer value of x between 1 and 2 (excluding 2)

y = 2 with the integer value of x between 2 and 3 (excluding 3)
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But our function is two units below, so it is [x] - 2
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3 years ago
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Answer: 31/35

Step-by-step explanation:

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4 years ago
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Một lô hàng có 6 chính phẩm và 4 phế phẩm, lấy ngẫu nhiên 2 sản phẩm. tìm kỳ vọng của số chính phẩm
lana66690 [7]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
The federal government would like to test the hypothesis that the average age of men filing for Social Security is higher than t
mixas84 [53]

Answer:

The 90% confidence interval is  -0.3433<  \mu_1 - \mu_2 < 2.1433

Step-by-step explanation:

From the question we are told that

   The sample mean for men is  \= x_1 = 64.5 \ years

    The sample mean for women is  \= x_2 = 63.6 \ years

     The sample size for men  is   n_1 = 35

      The sample size for women is  n_2 = 39

      The standard deviation for men is s_1 = 3.0

       The standard deviation for women is  s_2 = 3.5

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.10

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.645

Generally the standard error is mathematically represented as

     SE = \sqrt{\frac{s_1^2 }{n_1}  + \frac{s_2^2}{n_2} }

=>  SE = \sqrt{\frac{3^2 }{35}  + \frac{3.5^2}{39} }

=>  SE = 0.7558

Generally the margin of error is mathematically represented as

       E =  Z_{\frac{\alpha }{2} } *  SE

=>     E =  1.645  *  0.7558

=>     E =  1.2433

Generally 90% confidence interval is mathematically represented as  

      (\= x_1 - \= x_2) -E <  \mu_1 - \mu_2 <  (\= x_1 - \= x_2) -E

=>    (64.5 - 63.6) -1.2433<  \mu_1 - \mu_2

=>    -0.3433<  \mu_1 - \mu_2 < 2.1433

7 0
3 years ago
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