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ExtremeBDS [4]
3 years ago
9

PLZ HELP ASAP!!! I SHALL DUB THEE BRAINLIEST!! ^﹏^ I have two links attached. Plz answer all. I AM TIMED PLZ HELP!!! ASSSSSAAAAA

PPPPP

Mathematics
2 answers:
Savatey [412]3 years ago
8 0

Answer:

15 ,90 30 45.90,23,23,45,

0

,12,3,

Step-by-step explanation:

Serggg [28]3 years ago
7 0

Step-by-step explanation:

1 is 9 ² - 1 + 3x

the rest are really blury

use a calculator

hope this helps

i would appreciate it if u can heart and like my answer and maybe even give it 5 stars or brainliest pls i beg u thx !!! : )

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Suppose that the quarterly sales levels among health care information systems companies are approximately normally distributed w
jok3333 [9.3K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The sales level that is the cut-off between quarters that are considers as "failure" and those that are not is evaluated as

          y = 6.3 \ million \ dollars

Step-by-step explanation:

   From the question we are told that the

            Mean is \mu = 8 \ million \ dollars

           Standard deviation is \sigma = 1.3 \ million \ dollars

 Let Y be the random variable that denotes the sales made quarterly among health care information system

    The normal distribution for this data is mathematically represented as

                            Y ~ N (\mu = 8 , \sigma^2 = 1.69)

  From the question we are told that a quarter is consider a failure by the company if the sales level that quarter in the bottom 10% of the of all quarterly sales

            So

 The the Probability of obtaining quarterly sales level that is equal to  10% of all quarterly sale (It is not below 10%) is mathematically represented as

                    P[Y < y ] = 0.10

 This can be represented as a normal distribution in this manner

                  P [ \frac{Y- \mu}{\sigma }  < \frac{y -\mu}{\sigma} ] = 0.10

         Where  \frac{Y - \mu }{\sigma }  = Z ~ N(0 , 1)      

{This mean that this equal to the normal distribution between 0, 1  which is the generally range of every probability }

Therefor we have

                   P[Z < \frac{y- 8}{1.3} ]

The cumulative distribution function for a normal distribution of y  is mathematically  represented as

                \phi [\frac{y- 8}{1.3} ] = 0.10

This is because a cumulative distribution function of a random value Y or a distribution of Y evaluated at y is the probability that Y will take will take a value that is less or equal to y

                 \frac{y- 8}{1.3} = \phi ^{-1}(0.10)

Calculating the inverse of the cumulative distribution function value of 0.10 which is negative the  the critical value(Critical values determine what probability a particular variable will have when a sampling distribution is normal or close to normal.) of 0.01

                    \phi ^{-1}(0.10) =- [1 - \frac{0.10}{2}]

                                    =  - 1.28155

                 \frac{y - 8}{1.3}  = - 1.2816

                => y = 8 - (1.2816)(1.3)

                      y = 6.3 \ million \ dollars

                 

     

5 0
3 years ago
The vertex form of the equatio of a parabola is y=6(x-2)^2-8. what is the standard form of the equation?
fomenos
Y = 6x^2 -24x +16.

Standard form y=ax^2+bx+c
5 0
3 years ago
A fitness center has two membership plans. One has a low dollar sign up fee of 15 dollars and cost 38 dollars per month to join.
victus00 [196]
Let x be the number of months.
The first plan is 15 dollars sign up fee and 38 dollars per month. So the equation is 38x + 15.
The second plan is 78 dollars as sign up fee and 31 dollars per month. So the equation is 31x + 78.

We need find when x has the same value in both equations, so we do their equality:
38x + 15 = 31x + 78
Let's subtract 15 from both sides
38x + 15 = 31x + 78
38x + 15 - 15 = 31x + 78 - 15
38x = 31x + 63

Now let's subtract 31x from both sides to have the variables on a side and the numbers on side:

38x = 31x + 63
38x - 31x = 31x - 31x + 63
7x = 63

Divide both sides by 7 to have the variable x on a side and its value on the other:
(7x)/7 = 63/7
x = 9

So at month 9, the 2 plans will cost the same.

Let's check our answers, and let y be the cost:
y = 38x + 15 = 38*9 + 15 = 357
y = 31x + 78 = 31*9 + 78 = 357
Our answer has been approved.

Hope this helps! :D
8 0
3 years ago
What is the volume of the prism ?
galina1969 [7]

Answer:

Your answer is 150 units!

8 0
3 years ago
Read 2 more answers
How do I find angle k?​
amm1812

Answer:

I believe (not confident) You take 180-28 and divide that by 2. (76 degrees)

We know that the top angle of the triangle is 28 degrees because vertical angles are congruent.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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