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slega [8]
3 years ago
11

Notation scientifique de 40075017

Mathematics
1 answer:
Temka [501]3 years ago
5 0

Answer:

4.0075017*10^7

Step-by-step explanation:

move the decimal place left 7  

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Use the formula a2 – b2 = (a + b)(a – b) to factor completely. What are the factors of 36x8 – 49?
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Step-by-step explanation:


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I need to solve for x and y. Any help is greatly appreciated! Thank you!
Inessa05 [86]

x=-3, y=1

Step-by-step explanation:

Given equations are:

2x-3y=-9     Eqn 1

x+y = - 2      Eqn 2

From eqn 2:

x=-y-2

Putting x=-y-2 in eqn 1

2(-y-2)-3y=-9\\-2y+4-3y=-9\\-5y-4=-9\\Adding\ 4\ on\ both\ sides\\-5y-4+4=-9+4\\-5y=-5\\Dividing\ both\ sides\ by\ -5\frac{-5y}{-5}=\frac{-5}{-5}\\y=1\\Putting\ y=1\ in\ eqn\ 2\\x+1=-2\\Subtracting\ 1\ from\ both\ sides\\x+1-1=-2-1\\x=-3

Hence,

x=-3, y=1

Keywords: Linear equations, Variables

Learn more about linear equations at:

  • brainly.com/question/4034547
  • brainly.com/question/4054269

#LearnwithBrainly

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What is -5/8 times -8 plus 10
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The answer will be 15..
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