1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
steposvetlana [31]
3 years ago
12

En un programa de televisión se hacen 30 preguntas. Por cada respuesta correcta se suman 8 puntos, por cada respuesta errónea se

restan 5 puntos y por aquellas preguntas que no se contesten no se suman ni se restan puntos. Si un participantes obtuvo 13 puntos, ¿Cuantas respuestas erróneas pudo tener?
Mathematics
1 answer:
nikdorinn [45]3 years ago
8 0

Answer:

7 wrong answers.

Step-by-step explanation:

We know that when you answer a question well, you earn 8 points and a bad one loses 5 points, this means that when you answer 1 good and 1 bad, there is a total of 3 points (8-5).

This means that when answering 5 good and 5 bad, in total it would be 3 * 5 points, that is to say 15 points, that is, it goes through 2 points. To subtract 2 points, you would have to answer 1 good and 2 bad, (8 - 2 * 5), which turns out to be -2 points.

In total there would be 6 questions right and 7 questions wrong, like this:

8 * 6 + 5 * 7 = 13

13 points, in 13 questions (6 correct + 7 incorrect)

The rest of the questions were not answered so that the score does not go up or down.

Which means you got 7 wrong answers.

You might be interested in
Write an algebraic expression for each verbal expression <br><br> Nine divided by x
Gre4nikov [31]

Answer:

9÷x is the correct answer

5 0
3 years ago
PLS HLP LOTS OF POINTS
cupoosta [38]
380

3 hundreds  8 tens
2 hundreds 18 tens
1 hundred   28 tens
0 hundred   38 tens
5 0
2 years ago
Read 2 more answers
What is the value of the expression 30 - 9+ 3 - (12 = 4)?
Flauer [41]

Answer:

21

Step-by-step explanation:

30 - 9 +3

30 - 12

18

18 - 12=4

      12/4 = -3

18 - -3

21

8 0
1 year ago
if Chelsea has 11 times as many art. Brushes and they have 60 art brushes altogether how many brushes does Chelsea have
scoundrel [369]
<span>t's call P the number of art brushes that Monique has. Chelsea has 11xP (that is 11 times as many as Monique) Together they have: P + 11xP = 12xP That means 12xP = 60 (60 is the number of art brushes they have together) In order to find how much is P, we need to divide: 60 Ă· 12 = 5 brushes P = 5 ; that means has Monique 5 art brushes. Chelsea has 11 times as many art brushes as Monique: 11 x 5 = 55 brushes</span>
8 0
3 years ago
Chad earns $4 each day walking his neighbor's dog. He spends $8 purchasing dog treats
Masja [62]
3 days they with both have 4 dollars
6 0
2 years ago
Other questions:
  • Please help asap!!!!
    10·1 answer
  • Determine the general solution: sin 2x=-1/2
    13·1 answer
  • Solve this problem T=u+v/2 solve for u
    7·1 answer
  • How does a digit in the ten thousands place compare to a digit in the thousands place
    5·1 answer
  • Convert to vertex form.
    12·1 answer
  • Which best describes how to get from the origin to the point (–5, –7)?
    6·2 answers
  • I need help ASAP. If the measure of
    11·2 answers
  • If 2^x3^y=18 and 2^x×3^y=36 then find the value of x and y​
    8·1 answer
  • Please help this is due soon
    5·1 answer
  • Simplify the following equation:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!