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
Yakvenalex [24]
3 years ago
9

In a test, +3 marks are given for every correct answer and -1 are given for every incorrect answer (i) Sona scored +20 marks tho

ugh she got 10 correct answers. How many incorrect answers has she attempted??
Mathematics
1 answer:
e-lub [12.9K]3 years ago
4 0

Answer:

10 incorrect answers

Step-by-step explanation:

Correct answer = +3

Incorrect answer = - 1

Mark scored = 20

Number of correct answers = 10

Let:

Incorrect answers = y

Hence, we can fashion out the expression for total score :

(Number of correct answers * score per Correct answer + number of incorrect * score per incorrect) = total score

(10 * 3) + (y * - 1) = 20

30 - y = 20

-y = 20 - 30

-y = - 10

y = 10

10 incorrect answers

You might be interested in
12 yd<br> 4 yd<br> 7 yd<br> 7yd<br> 4yd<br> 4 yd<br> 4 yd<br> 4 yd<br> what is the area
N76 [4]
I think the answer to it is 2,688
6 0
3 years ago
Find the measure of the angle indicated in bold.
muminat

Answer:

Hello it's me,

I've thought about us for a long, long time,

Maybe I think too much but something's wrong,

There's something here that doesn't last too long,

Maybe I shouldn't think of you as mine.

Step-by-step explanation:

3 0
3 years ago
Which number when added to 45 results in a sum of O?
sesenic [268]
The number is -45 (negative 45)
5 0
3 years ago
Read 2 more answers
A telemarketer spent 7 hours during her 8-hour shift calling up new clients. What percentage of her time was spent on things oth
padilas [110]
1/8 of her time was spent on things other than working with clients. 1/8 = 0.125 * 100 = 12.5%
6 0
2 years ago
Would my answer be c or a
mylen [45]

the answer is c

the y-intercept is 10–it doesn’t have a negative sign, so it is positive

4 0
3 years ago
Other questions:
  • How to find the base and altitude of a rectangle if its area is 70 and its perimeter is 34?
    11·1 answer
  • What is the value of x? <br><br> A. 68° <br> B. 62° <br> C. 112° <br> D. 124
    14·2 answers
  • What is (x+5)(x-4)=0 Expand and solve for x
    9·2 answers
  • Help me out with this please?
    6·1 answer
  • 42 inches to 54 inches
    14·1 answer
  • I'm having a hard time completing Task 2 of d. and e. <br> Please answer them.
    9·1 answer
  • You are on the high school basketball team. The ball you use has a diameter of 9 inches. What is the volume of the ball? Use 3.1
    12·1 answer
  • Find the domain of the function in interval notation: f(x) =1/ x + 22​
    11·1 answer
  • Someone please HELP! Thanks so much
    9·1 answer
  • Factor the expression –5g + 15h – 25.
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!