3 years ago

I need HELP!!!!!!!!!

Mathematics

1 answer:

Elena-2011 [213]3 years ago

4 0

$(Poodles)\subset(Dogs)\\\\\text{The set}\ Podles\ \text{is the subset of the set}\ Dogs$

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Answer:

Part A: 7n + 30= -5 and 8n + 40= 16

Part B: 7(8) + 30= 86 and 8(8) + 40= 104

Part C: Company A saves you 12.

Step-by-step explanation:

Company A: 7n + 30

Company B: 8n + 40

7n + 30= -5 8n + 40= 16

7(8) +30= 86 8(8) +40= 104

7(2) + 30= 44 8(2) + 40= 56

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Step-by-step explanation:

From step 5:

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Here, to solve for x so that the variable x stands alone, Alberto uses the identity property of multiplication, which justifies what he has in step 6.

Step 6:

$x = 20$

According to the identity property of multiplication, any value you multiply by 1 gives you that same value.

Therefore, 1x = 1 × x = x.

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