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NemiM [27]
3 years ago
13

The combined mean and variance of falary of 250 workers of city A and B are 560 and 5497

Mathematics
1 answer:
exis [7]3 years ago
7 0
I don’t know the answer to the question but I don’t know what to do with the question question but I don’t know what to do with the A 560
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Oliver reads 28 1/2 pages of a book in 1 1/6 hours. Express his reading speed in pages per hour
Inessa05 [86]

Hello there

in order to find the answer you need to multiply 28.5 by 1 1/6

you get 171/7

the answer is 24.4 pages

thank you

hope this helps

Best Regards Queen Z

3 0
3 years ago
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Find the linear equation in slope intercept form that passes through the points (5,3) and (2,-1)
padilas [110]

\bf (\stackrel{x_1}{5}~,~\stackrel{y_1}{3})\qquad  (\stackrel{x_2}{2}~,~\stackrel{y_2}{-1}) \\\\\\ slope =  m\implies  \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-1-3}{2-5}\implies \cfrac{-4}{-3}\implies \cfrac{4}{3} \\\\\\ \stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-3=\cfrac{4}{3}(x-5)\implies y-3=\cfrac{4}{3}x-\cfrac{20}{3} \\\\\\ y=\cfrac{4}{3}x-\cfrac{20}{3}+3\implies y=\cfrac{4}{3}x-\cfrac{11}{3}

8 0
4 years ago
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In a group of 10 people, there are 4 people that have the flu virus. Suppose we pick 3 random persons to test in order to determ
Murljashka [212]

Answer:

Tests is 100% Accurate, so by using the formula of random variable probability.

Step-by-step explanation:

Total number of people = 10

Sample space = p(A) = 10

Number of people that have flu = n(s) = 4

Pick random 3 persons, the possibility that they have flue is n(A) = ?

Let X is the random variable, consisting of number of positive flu test,

Tests is 100% Accurate, so by using the formula of random variable probability, we get

  P(X) = n (A) / n(S)

  P(X)      = ¾, is the probability of having positive flu test

5 0
3 years ago
What is the rule
Taya2010 [7]
Add 5

y is found by adding 5 to x
5 0
3 years ago
Factor. 2xy+5x−12y−30
worty [1.4K]
2xy + 5x -12y -30
x(2y + 5)  - 6( 2y + 5)
(2y+5) (x-6)
5 0
4 years ago
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