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Natasha2012 [34]
3 years ago
9

The sum of a number and -7 is equal to 40. Write the equation

Mathematics
2 answers:
Luba_88 [7]3 years ago
6 0

Answer:

Step-by-step explanation:

-7 + 47=40

kupik [55]3 years ago
5 0

Answer:

-7 + n = 40

Step-by-step explanation:

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Karen has $1.70 in coins. Karen has 8 coins, all of which are quarters or dimes.
kumpel [21]

x+y=8 and 25x+10y=170 are the linear equations.

x+y≤8 and 25x+10y≤170 are the inequalities.

Step-by-step explanation:

Given,

Worth of coins = $1.70 = 1.70*100 = 170 cents

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1 dime = 10 cents

Let,

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y represent the number of dimes

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x+y = 8

2.Write an equation to represent the value of the coins Karen has.

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For inequalities, the amount cannot increase number of coins and worth but it can be less, therefore,

x+y≤8

25x+10y≤170

x+y≤8 and 25x+10y≤170 are the inequalities.

Keywords: linear equations, addition

Learn more about linear equations at:

  • brainly.com/question/10570041
  • brainly.com/question/10610299

#LearnwithBrainly

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