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
Anna007 [38]
3 years ago
13

ethan took a quiz with 15 questions. if he answered 3/5 of the questions correctly, how many did he get wrong?

Mathematics
2 answers:
Kryger [21]3 years ago
7 0
I love this question!  It requires careful reading!  There are multiple ways to get the right answer, so here are a couple!  The sentence tells us the fraction of the questions he got RIGHT!  To find this out you must multiply 3/5 by the total number of questions (3/5 x 15 = 9  correct questions).  You then can subtract the 9 questions from the 15 total to find out the number that were INCORRECT/WRONG.  15 - 9 = 6 incorrect questions.  Another strategy would be to find the fraction of questions Ethan missed, which is one minus the fraction he got RIGHT.  1 - 3/5 or 3/5 + ___ = 1 (5/5).  He missed 2/5 of the questions, so you can multiply 2/5 by the total to get (2/5 x 15 = 6) 6 incorrect answers.  Hope this helps!
valentina_108 [34]3 years ago
3 0
\frac{15}{1} *  \frac{3}{5} =  \frac{45}{5} = 9 
 





15-9= 6
Ethan got six questions wrong. 
You might be interested in
A sample of 50 observations is taken from an infinite population. The sampling distribution of : a.is approximately normal becau
Korvikt [17]

Answer:

a.is approximately normal because of the central limit theorem.

Step-by-step explanation:

The central limit theorem states that if we have a population with mean μ and standard deviation σ and we take sufficiently large random samples from the population with replacement, then the distribution of the sample means will be approximately normally distributed.

For any distribution if the number of samples n ≥ 30, the sample distribution will be approximately normal.

Since in our question, the sample of observations is 50, n = 50.

Since 50 > 30, then <u>our sample distribution will be approximately normal because of the central limit theorem.</u>

So, a is the answer.

3 0
3 years ago
Line GH contains points G(–2, 6) and H(5, –3). What is the slope of ?
hoa [83]
7/9 is the answer I believe

8 0
3 years ago
In a family there was give sons. The oldest son is 11 3/4 years old, and every next younger brother is younger than the next by
aleksklad [387]

Answer:

5.5

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Sydney borrowed $5500 from the bank to pay for her first semester of college. The loan has a simple interest rate of 6% for the
sergij07 [2.7K]

Answer:

$330

Step-by-step explanation:

7 0
3 years ago
The mass of the liquid below is 45.5 grams if placed in a beaker with water the liquid will....
Zepler [3.9K]

Answer:

it will float!

Step-by-step explanation:

in order to find density, you must divide the mass by the volume. the volume is 56 ml, and the mass is 45.5. (45.5 / 56 = 0.8125) because we know the density of water is 1, and the density of this liquid is less than that of water, it will float because it is "lighter". hope it helped <33

3 0
3 years ago
Read 2 more answers
Other questions:
  • A study uses a sample of 200 college students to learn about the number of hours they studied for their final exams. The mean nu
    15·2 answers
  • Please help quickly needed !<br> thank you !
    12·1 answer
  • If pentagon ABCDE is rotated 180° around the origin to create pentagon A′B′C′D′E′, what is the ordered pair of point D′?
    6·2 answers
  • Solve for u<br><br> 1/3 (u+1)= 1<br><br> u= ______
    14·1 answer
  • A study was performed to determine whether men and women differ in their repeatability in assembling components on printed circu
    13·1 answer
  • What does it mean for an equation to be linear? What kind of relationships can be modeled by equations in the form y=mx?
    15·2 answers
  • 25 pts to who ever can help with this question:
    9·1 answer
  • When two men get married to each other, do they both go to the same bachelor party?
    8·2 answers
  • In Rectangle ABCD, m
    12·1 answer
  • What fraction has a numerator 8 and is equivalent to 1/2<br><br> 4/8<br> 8/16<br> 8/12 or 8/9
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!