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tamaranim1 [39]
4 years ago
11

What is the average number of 25

Mathematics
1 answer:
ra1l [238]4 years ago
5 0

So, by using above rule for finding average; here number of the numbers is 2 and sum of these two numbers is 25+50=75. Hence, average of 25 and 50 is: 75/2=37.5. Thus, average of 25 and 50 is 37.5.

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Determine the equivalent system for the given system of equations.<br> 4x - 5y = 2<br> 3x - y = 8
Black_prince [1.1K]

Solving the system of equations we get solution set (38/11,26/11)

Step-by-step explanation:

We need to solve the system of equations:

4x - 5y = 2\\3x - y = 8

Let:

4x - 5y = 2\,\,\,eq(1)\\3x - y = 8\,\,\,eq(2)

Multiply equation 2 with 5 and subtract both equations to find value of x:

4x - 5y = 2\\15x - 5y = 40\\-\,\,\,\,+\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,-\\--------\\-11x=-38\\x=\frac{-38}{-11}\\x=\frac{38}{11}

So, value of x = 38/11

Now, finding y:

Putting value of x in equation 2

3x-y=8\\3(\frac{38}{11})-y=8\\\frac{114}{11}-y=8\\-y=8-\frac{114}{11}\\-y=\frac{8*11-114}{11}\\-y=\frac{88-114}{11}\\-y=\frac{-26}{11}\\y=\frac{26}{11}

So, value of y = 26/11

So, Solving the system of equations we get solution set (38/11,26/11)

Keywords: System of equations

Learn more about system of equations at:

  • brainly.com/question/9045597
  • brainly.com/question/3739260
  • brainly.com/question/13168205

#learnwithBrainly

6 0
3 years ago
a housewife spent 3/7 of her money to buy yams and 1/2 of the remainder to buy rice what is the fraction of her money left​
g100num [7]

Answer:

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------------------------------------------------------------------------------------------------

To find the fraction of saving:

Fraction of money saved = 1 - calculator - book

Fraction of money saved = 1 - 2/5 - 12/35 = 9/35

Fraction of the money saved = 9/35

Step-by-step explanation:

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