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2 years ago

Help me solve this problem

Mathematics

1 answer:

Alexxx [7]2 years ago

3 0

Answer:

C. Associative Property

Step-by-step explanation:

The associative property of addition states that changing the grouping of the addends does not change the sum.

(-7+3)= -4

-4+9= 5

(3+9)= 12

-7+12=5

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Vesnalui [34]

Answer: $3\dfrac{1}{4}$ hours

Step-by-step explanation:

Let x be the time ( in hours ) you feel good and y be the time ( in hours ) that you get tired.

As per given , we have

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Since : $Distance = Speed\times Time$

So , we have

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According to the given question , we have the following system of equations ,

$x+y= 8--------(1)\\\\20x+12y=122------------------(2)$

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2 years ago

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vlada-n [284]

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Step-by-step explanation:

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2 years ago

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2 years ago

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zvonat [6]

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2 years ago

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daser333 [38]

Answer:

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Step-by-step explanation:

Use pyramtherm theorem.

4^2+ 4^2= c^2

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Rounding up is 5.66

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2 years ago

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