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RSB [31]
3 years ago
15

Question: Ned took a test with 25 questions. He lost 4 points for each of the 6 questions he got wrong and earned an additional

10 points for answering a bonus question correctly. How many points did Ned receive or lose overall?
My Thoughts: 6(-4)+10=-14; lost 14 points

What I'm confused on: I need a confirmation for my thoughts first. I need to you to break down the question for me. Lastly, I want to understand why the number of questions he DID get correctly doesn't play a role in the math problem. Thanks!
Mathematics
2 answers:
Dima020 [189]3 years ago
6 0
Your thoughts are correct; Ned loses 14 points overall.

The reason the correctly answered questions do not factor into the answer is because that is not what the question is asking. Correct answers are not even mentioned :)
Murrr4er [49]3 years ago
4 0
If each Question is 4 points as he lost 4 point for each question, then
total points =25 ×4=100
lost point=6×4=34
100-34=66 points received
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gregori [183]

Answer:

Step-by-step explanation:

Given quadratic equation is,

y = -2x² + 4x + 5

y = -2(x² - 2x) + 5

y = -2(x² - 2x + 1 - 1) + 5

y = -2(x² - 2x + 1) + 2 + 5

y = -2(x - 1)² + 7

This equation is in the vertex form of the quadratic equation,

y = a(x - h)² + k

where, (h, k) is the vertex of the parabola.

Therefore, vertex of the given quadratic equation is (1, 7)

The equation can be rewritten as y = -2(x - 1)² + 7.

Therefore, the vertex of the graph of the function y = -2x² + 4x + 5 in the xy-coordinate plane is located at the point (1, 7).

4 0
3 years ago
Last week's Apple sold for 3.99 per bag this week price of the bag of apples is 3.39 if Margaret buys 20 bags of apples this wee
k0ka [10]

Answer:

Margaret paid 12.84 less for bags of apples this week compared to last week.

Step-by-step explanation:

Given:

Cost of per bag of apples last week = 3.99

Cost of per bag of apples this week = 3.39

Number of bags of apples bought = 20

Now First we will find the Cost of 20 Apples bags last week.

Cost of 20 Apple bags last week can be calculated by Multiplying Cost of per bag of apples last week with number of bags of apples bought.

framing the equation we get;

Cost of 20 Apple bags last week = 20\times3.99= 79.8

Percent of sales tax =7%

Amount of money paid in sales tax last week = 7% ×Cost of 20 Apple bags last week = \frac{7}{100}\times79.8 \approx5.59

Now Total Cost paid last week is sum of Cost of 20 Apple bags last week and Amount of money paid in sales tax last week.

Total Cost paid last week = 79.8 + 5.59 = 85.39.

Now we will find the Cost of 20 Apples bags this week.

Cost of 20 Apple bags this week can be calculated by Multiplying Cost of per bag of apples this week with number of bags of apples bought.

framing the equation we get;

Cost of 20 Apple bags this week = 20\times3.39= 67.8

Percent of sales tax =7%

Amount of money paid in sales tax this week = 7% ×Cost of 20 Apple bags last week = \frac{7}{100}\times67.8 \approx4.75

Now Total Cost paid this week is sum of Cost of 20 Apple bags last week and Amount of money paid in sales tax this week.

framing in equation form we get;

Total Cost paid this week = 67.8 + 4.75 = 72.55.

Difference in cost between last week and this week is equal to Total Cost paid last week minus Total Cost paid this week.

Difference = 85.39 - 72.55 = 12.84

Hence Margaret paid 12.84 less for bags of apples this week compared to last week.

6 0
3 years ago
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Yuki888 [10]

Answer:

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3 0
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storchak [24]

Answer:

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Step-by-step explanation:

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Studentka2010 [4]
13/27 = ?/324

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13*12= 156

13/27 = 156/324

? = 156
6 0
3 years ago
Read 2 more answers
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