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Setler79 [48]
3 years ago
6

Please help I have a test on this and I don’t have understand

Mathematics
1 answer:
stira [4]3 years ago
6 0
Answer: D Store A and Store C 
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$8050 invested for 5 years at 4.8% p.a
AURORKA [14]

If my ans was helpful u can follow me.

6 0
3 years ago
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
Find the distance between pair of points (0, - 5) and (7, 2) . necessary , express the answer in radical form and then round to
kifflom [539]

Answer:

d=9.899495 or √98

Step-by-step explanation:

√(7-0)^2 + (2-(-5))^2

√(7)^2+(7)^2

√98

6 0
2 years ago
Help plz!<br> I suck at math, and I have already failed this quiz 2 times.
kondaur [170]
It’s A yw loves....
8 0
2 years ago
Pls answer asap :)
dezoksy [38]

Answer:

one fourth

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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