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
Igoryamba
3 years ago
10

In a test (+5) marks are given for every correct answer and (-2) marks are given for every incorrect answer. Radhika answered al

l the questions and scored 30 marks though she got 10 correct answers. How many incorrect answers had they attempted?
Mathematics
1 answer:
kvv77 [185]3 years ago
4 0

Answer:

10 incorrect answers

Step-by-step explanation:

From the information given, you can say that 5 marks for the number of correct answers minus two marks for the number of incorrect answers is equal to 30 that is the score that Radhika got:

(5*10)-2x= 30, where x is the number of incorrect answers.

Now, you can solve for x:

50-2x=30

50-30=2x

20=2x

x=20/2

x=10

According to this, the answer is that they attempted 10 incorrect answers.

You might be interested in
Translate into an algebraic expression and simplify if possible. I have a total of 10 gigabytes of data on my computer, xgigabyt
pogonyaev

Answer:

(20-3x)/2 GB

Explanation:

Total amount of data on my computer = 10GB

Total amount of data occupied by movies = x GB

If pictures take up half the amount of space that movies do, then;

Total amount of data occupied by pictures = 1/2 of space occupied by movies = 1/2 x

If the remaining are music, the amount of space occupied by music will be expressed as shown;

Total space -(space occupied by movies + space occupied by pictures)

= 10 - (x+1/2 x)

Total amount of data occupied by music = 10 - (x+1/2 x) GB

On simplification;

= 10 - (x+1/2 x)

= 10-{(2x+x)/2}

= 10 - {3x/2}

= (20-3x)/2 GB

Hence, amount of gigabytes of music stored on my computer is expressed as (20-3x)/2 GB.

4 0
4 years ago
Which measure of central tendency best represents the most requested song at a radio station?
tamaranim1 [39]
The mode because it is the number that occurs more often but in this situation it would be most requested song.
7 0
3 years ago
The ratio of a basketball player's completed free throws to attempted free throws is 4 to 7. If she completed 12 free thro
mina [271]

Answer:C

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Given the following coordinates, what is the the length of the diagonals?
White raven [17]

Answer:

ILOVEMYCOUNTRY!!!

Step-by-step explanation:

F........U.......C.......K.....YOU.....BRO.......USE UR BRAINS !!!!

4 0
3 years ago
8-4k=40 <br><br> What is the value of k?
alisha [4.7K]

Answer:10

Step-by-step explanation:You will do 8-4=4 4*k=40 40\4=10 k=10.

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the solution to the equation? 2 x squared plus 4 equals 20 Choose all answers that are correct.
    7·1 answer
  • How do u change 1/4 to a decimal I know it's 0.25 but what is the steps and no it not in elementary I'm in 6th grade FYI
    11·2 answers
  • Help with number 4,5,6 and 7 plz help this is really hard I fell asleep in class plz plz help
    13·2 answers
  • A small piece of metal weighs 0.77 gram. What is the value of the digit in the tenths place?
    11·1 answer
  • Please help! Will mark as brainliest!
    14·2 answers
  • Solve 2x - 8 &lt; 7. A {x | x &lt; 1/2} B {x | x &gt; 1/2}C {x | x &lt; 15/2}D {x | x &gt; 15/2}
    6·1 answer
  • Hey pls show some working i need some serious help
    6·1 answer
  • Help please I really need help
    9·1 answer
  • Help me please!<br> what goes in the box?
    6·2 answers
  • The approximate areas of South Carolina and Perto Rico are listed below: South Carolina: 8.29 * 10 ^ 4 kilometers Puerto Rico: 5
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!