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aliina [53]
3 years ago
12

True or False: (-8) + 9 = 9+ (-8) Show your work to prove your answer.

Mathematics
2 answers:
valina [46]3 years ago
7 0

Answer:

1

Step-by-step explanation:

-8 +9 = 1

9 + -8 = 1

answer = 1

miskamm [114]3 years ago
7 0

Answer:

true

Step-by-step explanation:

(-8) + 9 = 9 + (-8)

solve both sides of the equation

-8 + 9 = 1

9 + (-8) is equivalent to 9-8 = 1

so,

1 = 1

this equation is true

hope this helps!! :)

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A group of friends is addressing wedding invitations. Casey can address 23 envelopes in one hour, Anne can address 45 envelopes
vlabodo [156]

Answer:

"4.71" is the correct answer.

Step-by-step explanation:

As we know, 45 envelopes addressed in 2 hours then,

⇒  \frac{45}{2} =22.5

and, 45 in 3 hours,

⇒  \frac{61}{3}=20.3

Now by adding all together, we get

⇒  23+22.5+20.3

⇒  65.8

and multiply it by "4.71", we get

⇒  65.8\times 4.71

⇒  309.91

Round it "310".

So that "4.71" is the right answer.

6 0
3 years ago
HELP!!!!!!!!!!!
erica [24]
Your answer would be (b.) because -2+-3=-5

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Step-by-step explanation:

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Answer:

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