3 years ago

What is the sum of the counting numbers 1 - 40

2 answers:

5 0

Simply it as follows:

1 + 39 = 40
2 + 38 = 40 etc

18 + 22 = 40
19 + 21 = 40

There are 19 of these plus 40 itself . . .therefore 20 of them

20 x 40 = 800

And finally the last number not used, 20

Therefore 800 + 20 = 820

natita [175]3 years ago

5 0

820. there is a shortcut which can be used when adding consecutive numbers regardless of how big it is. it can also be done manually though

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vesna_86 [32]

Answer:

Jaylen's conclusion is a valid conclusion because it is logical

Step-by-step explanation:

Jaylen's conclusion is a valid conclusion because it is logical. Regardless of not having all the necessary information needed to prove that the number of dogs is the sole main cause for an increase in cleaner usage she can still conclude this. Since dogs naturally bring in dirt from outside and make messes, and since Jaylene notices that families that are known to have more dogs are buying more floor cleaner then she can logically come to this conclusion.

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3 years ago

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What is the equation in standard form of the line y = 1/9x + 5?

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Answer:

Step-by-step explanation:

9(y = 1/9x + 5)

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