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Rudik [331]
3 years ago
15

I need help please :)

Mathematics
1 answer:
KengaRu [80]3 years ago
3 0

Answer:

The answer is d because 0.04 is the same as 4% and 3.5 < 0.04

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if there are 200 questions and 4 marks for correct answers and -1 for incorrect answer and total marks is 250then what is the nu
Zanzabum

The number of questions answered correctly = 90.

<h3>What is a system of linear equations?</h3>
  • A system of linear equations is a set of two or more linear equations.
  • Linear equations refer to the equations that involve two or more variables in the form of "ax + b".

Now,

Given:

  • Total number of questions = 200
  • Marks for correct answer = 4
  • Marks for incorrect answer = -1
  • Total marks = 250

To find : Number of correct answers = ?

Finding:

Now, assuming that the student attempted and answered all the questions,

  • Let the number of questions correctly answered be x and incorrectly answered be y.

Then,

  1. x + y = 200 (For number of questions) (eqn 1)
  2. and 4x - y = 250 (For the marks scored) (eqn 2)

Solving the system of linear equations:

For eqn 2, we get that y = 4x - 250

Substituting in eqn 1, we get:

=> x + 4x - 250 = 200

=> 5x = 250 + 200 = 450

=> x = 90

That is, the number of questions answered correctly = 90, the incorrect answers = 200 - 90 = 110.

To learn more about system of linear equations, refer to the link: brainly.com/question/2226590

#SPJ4

8 0
1 year ago
In the graph below, which descriptions relate to Figure c?
Bingel [31]

im not sure what ur asking. but c is a line segment

6 0
3 years ago
Javier is a barista at a coffee shop. Determine his net pay for the week when his gross pay was $570. Medicare is 1.45% of gross
Zarrin [17]

Answer: $526.39

multiply both taxes by gross pay.  subtract those answers from the gross pay you will have the answer.

4 0
4 years ago
Students at Westbrook middle school hold green team meetings
Tems11 [23]
What’s the whole question???!
7 0
3 years ago
Which fraction and equivalent decimal correctly shows the ratio of shaded circles to all circles
iren [92.7K]

Answer:


There are 12 circles and 6 of them are shaded. You have to find the ratio of how many circles are shaded and 6 circles are shaded and because, 6 is half of 12 the answer is 1 over 2=0.5

4 0
3 years ago
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