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
Marianna [84]
3 years ago
7

In a test (+4) marks are given for every correct answers and (-3) marks are given for every incorrect answers 1) Tahiya answered

all questions and scored 40 marks though she got 12 correct answers. 2) Helmin also answered all the questions and scored (-14) marks though he got 5 correct answers. How many incorrect answers had they attempted?
Mathematics
1 answer:
stealth61 [152]3 years ago
4 0

Answer:

Tahiya attempted 3 incorrect answers.

Helmin attempted 11 incorrect answers.

Step-by-step explanation:

Correct = +4

Incorrect = -3

1) Tahiya got 12 correct answers and scored a 40, the number of incorrect answers was:

4*12-3I=40\\I=\frac{8}{3}\\I=2.67

2) Helmin got 5 correct answers and scored a -14, the number of incorrect answers was:

4*5-3I=-14\\I=\frac{34}{3}\\I=11.33

In both cases the number of incorrect answers obtained is a fraction, which means that either the data provided is inaccurate, or that the scores obtained by the students are approximate. Let's round the number of incorrect answers to the nearest whole answer.

Tahiya attempted 3 incorrect answers.

Helmin attempted 11 incorrect answers.

You might be interested in
Equilateral triangle ABC has a perimeter of 96 millimeters. A perpendicular bisector is drawn from angle A to side Line segment
prisoha [69]

Answer:

<h2>A  16mm</h2>

Step-by-step explanation:

An equilateral triangle is a triangle that has all of its sides equal.

Perimeter of an equilaterial triangle = 3s where;

s is one side of the triangle.

Given the perimeter of ABC = 96mm

Substituting into the formula above to get s;

96 = 3s

s = 96/3

s = 32mm

Hence the length of one side of the triangle is 32mm

If a perpendicular bisector is drawn from angle A to side Line segment B C at point M, then MC will be half of BC and ΔAMC will be a right angled triangle.

Since all the sides of the triangle are equal, hence BC = 32mm. Since MC is the half of BC, then MC = 1/2 of 32mm

MC = 1/2 * 32mm

MC = 16mm

<em>Hence the length of Line segment MC is 16mm</em>

<em></em>

5 0
3 years ago
Read 2 more answers
Solve the problem -8 / (-4) + (6 + 2) =?<br> A. 12<br> B. 6<br> C. 8<br> D. 10
zmey [24]

Answer:

d , 10

Step-by-step explanation:

-8  / -4 = positive 2, + (6+2) (eight) = 10

7 0
3 years ago
Read 2 more answers
Division story of 56 divided by ? Equals 8
TiliK225 [7]
56÷7=8 that is the answer have a nice day
3 0
3 years ago
Read 2 more answers
What is 931/12 Anwser is 345
Katarina [22]
Well, you already found the answer :)
4 0
3 years ago
How to add fractions
natta225 [31]
So we always make the denominator (bottom number) the same, then when it’s the same we just add!
7 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP QUICK. I'm Offering 10pt &amp; Brainliest answer
    7·1 answer
  • When Steve woke up. His temperature was 102 F. Two hours later it was 3 degrees lower. What was his temperature then?
    5·1 answer
  • Is 20 greater then or equal to 4/5w?
    7·2 answers
  • There are 8 pencils in a package. How many packages will be needed for 28 children if each child gets 4
    13·1 answer
  • $149 guitar; 29% discount​
    12·1 answer
  • Rewrite the expression in its simplest form
    9·1 answer
  • Х+6y = 1<br> 2х - Зу = 32
    11·2 answers
  • Can someone please explain step by step on how I can get the answer? If so I’ll mark you brainliest
    11·1 answer
  • What is a formula for the nth term of the given sequence? 15, 24, 33
    10·1 answer
  • Find the location of G, the midpoint of FH.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!