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Ket [755]
3 years ago
6

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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Sum interior angle on a regular pentagon
Sophie [7]

Answer:

540°

Step-by-step explanation:

Formula: note that n means nr of sides

(n-2)×180°

(5-2)×180°=3×180=540°

Where each angle are 540°÷5=108°

4 0
2 years ago
This table shows values represented by an exponential function.
Bad White [126]

Answer:

a = 2 , f(2)=9

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And replacing the data into the average rate formula we got:

m = \frac{64-9}{4-2}= 27.5

And then the best answer for this case would be:

C. 27.5

Step-by-step explanation:

For this cae we know that the average rate of change of a function is given by this general expresion:

m = \frac{f(b) -f(a)}{b-a}

For this special case from the info of the table we have:

a = 2 , f(2)=9

b = 4 , f(4)=64

And replacing the data into the average rate formula we got:

m = \frac{64-9}{4-2}= 27.5

And then the best answer for this case would be:

C. 27.5

7 0
3 years ago
Find the area of the circle. Round your answer to the nearest hundredth. 3 in
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Answer:

28.27 or 28 rounded up.

7 0
3 years ago
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2 Mayra is a caterer and charges $75 per plate plus a
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Answer:

$11,280

Step-by-step explanation:

Plug in 150 as p into the equation to solve for the cost, C:

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C = 30 + 75(150)

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Answer:

4

Step-by-step explanation:

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