The below classifies a stock's price change as up, down, or no change for today's and yesterday's prices. Price changes were examined for 100 days. A financial theory states that stock prices follow what is called a "random walk." This means, in part, that the price change today for a stock must be independent of yesterday's price change. Use significant level of 5%, test the hypothesis that daily stock price changes for this stock are independent. 1.

Q: Mr X's age is three times my age. The sum of our ages is 40. How old am I? How old is mr x?

A: Let Mr X’s age is x and my age is y.It is given that; Mr X’s age is three times my age.Implies that,

Q: A  student wants an A in his Math class, so must finish the semester with a 90 average.  So far, he…

A: As total number of parts = 9  Average of 9 is given as = 90 Hence the total grade should be 90×9 =…

Q: Solve the following system of equations by addition method: х — Зу 3D —8 -3x – y = 4

A: Solution:Givenx-3y=-8-3x-y=4Solve by addition method.

Q: how do i solve y?

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Q: 9. Ming and Carlos are selling cookie dough packages of chocolate chip cookie dough ane Ming sold 8…

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Q: • What restriction (on x or y) does dy have? What dx point (x, y) does this correspond to? • Find…

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Q: A company produces 128000 cases of soft drink annualy. It costs 1 dollar to store 1 case for 1 year…

A: Topic = Algebra

Q: Xy +Sx+5?= 2

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Q: There are two numbers whose sum is 72. One number (x) is twice the other (y). What are the numbers?…

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Q: Explain the method to solve a linear equation along with an example.

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Q: The sum of two positive number is 16. What is the smallest possible value of the sum of their…

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Q: Melissa's grade in her math class is determined by three tests and a final exam. To determine the…

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Q: Francesca wants to start exercising to burn at least 1200 extra calories per week, but she does not…

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Q: Please solve and show all steps for all multiple parts.

A: Step 1: Step 2: Step 3: Step 4:

Q: but when u substitute x = 12 hours x 6 + y = 4 hours x 8 = $104 which is not $120

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Q: numbers have a sum of 205. If one number is n, represent the other number as an expression of n?

A: Given query is to find the expression for the number in terms of n.

Q: 2x + y -4 %3D -2y + 4z = 0. 3x - 2z = –11 %3D -

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Q: Please solve and show all steps and work. There are 4 part solution.

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Q: The sum of a two -digit numbers and the number obtained by reversing the order of its digits is…

A: Given problem is : The sum of  a two digit numbers and the number obtained by receiving the order of…