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3 years ago

Plz help me I’m so confused 23 points plz explain it to me in sooo stuck

Mathematics

1 answer:

anzhelika [568]3 years ago

3 0

Answer:

6. D

7. B

Step-by-step explanation:

Nancy takes a test that has two sections: essay and true/false. She scores 56 points on the essay. Each true/false question is 4 points. So x number of true/false is worth 4 points each or 4x.

Together her score will be 56 + 4x.

She wants to score more than 80 or > 80.

So her test can be represented as the inequality 56 + 4x > 80.

This is solved using inverse operations.

56 + 4x > 80

4x > 24

x > 6

This should be graphed as an open circle at 6 on the umber line pointing and shaded to the the right for numbers greater than 6.

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Alexxandr [17]

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3 years ago

5(x+3)(x+2)-3(x2+2x+1)

mr Goodwill [35]

[ Answer ]

$\boxed{5x^{2} \ + \ 13x \ + \ 27}$

[ Explanation ]

Simplify: 5(x + 3)(x + 2) - 3(x2 + 2x + 1)

--------------------------------------

Add Similar Elements: 2x + 2x = 4x

5(x + 3)(x + 2) - 3(4x + 1)

Expand: 5(x + 3)(x + 2) - 3(4x + 1): $5x^{2}$ + 25x + 30

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Expand: - 3(4x + 1): -12x - 3

$5x^{2}$ + 25x + 30 - 12x - 3

Simplify: $5x^{2}$ + 25x + 30 - 12x - 3: $5x^{2}$ + 13x + 27

= $5x^{2}$ + 13x + 27

$\boxed{[] \ Eclipsed \ []}$

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Step-by-step explanation:

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Step-by-step explanation:

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