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
skelet666 [1.2K]
3 years ago
7

Ina a class of 30 children,60% can swim. how many children cannot swim?

Mathematics
1 answer:
rewona [7]3 years ago
6 0
60% of the total (30) can swim
60% of 30 = (60/100)*30 = 0.60*30 = 18
So 18 children can swim

This means 30-18 = 12 cannot swim

---------------------------------------------------------

An alternative is to do it this way: 

We know 60% can swim so that means 40% cannot swim. 
Notice how 100% - 60% = 40%
Or in other words, the 60% and 40% add to 100%. This is because we have two choices: either the person can swim or cannot swim

Since 40% cannot swim, this means
40% of 30 = (40/100)*30 = 0.40*30 = 12
and we get the same result as before

---------------------------------------------------------

Final Answer: 12
You might be interested in
A teacher wrote these numbers on the board: -5, -3,
jenyasd209 [6]

Answer:

ur light yagami u got this (right here I'd put eye roll emojis but thx to this app I cant)

4 0
3 years ago
Can anyone please help me answer this Math Question ? As soon as possible !!
NNADVOKAT [17]

Igor's taxable income is the difference between the amount

he earns annually and the amount he earns as exemptions.

Response:

  • The amount he pays in annual state income tax is;<u> $1,497</u>

<h3>Which methods are used to calculate income tax?</h3>

Given;

Annual earnings = $57,900

State tax rate = 3%

Amount earned in exemption = $8,000

Required:

The amount Igor pays in annual state income tax.

Solution;

Taxable Income = Annual Income - Exemptions

Therefore;

Igor's taxable income = $57,900 - $8,000 = $49,900

Taxable Income × Tax rate = Amount paid as tax

  • The amount he pays is therefore; $49,900 × 3% = <u>$1,497</u>

Learn more about income tax here:

brainly.com/question/25278778

7 0
2 years ago
Which answer is not a part of mathematical proofs?
Alex787 [66]
What are the multiple choices
7 0
3 years ago
Can someone please help me on this question? Use the following diagram to find the fraction representing each collection of dots
ale4655 [162]

Answer:

  a.  4/7

  e.  3/4

Step-by-step explanation:

For each part of the question, count the dots that meet the first requirement, and count the dots that meet the "fraction of ..." requirement. The desired fraction is the ratio of these numbers. In the answers above, we have reduced the fractions to lowest terms, but the question does not seem to require that.

__

a. The desired fraction is ...

  (dots in the triangle)/(all dots) = 16/28 = 4/7

__

e. (dots in the rectangle not in the circle)/(dots in the rectangle) = 9/12 = 3/4

8 0
3 years ago
Which equation is the inverse of y = x² - 36?
Damm [24]
Answer:
y = SQRT( x + 36 )
y = - SQRT( x + 36 )

Steps:
The 5 options you listed are unclear to me. But I provided the correct answer above.
4 0
1 year ago
Other questions:
  • What is the coefficient of the term -2mnp
    13·2 answers
  • At the beginning of a musical, four-fifths of the seats in the theater were filled. During intermission, 18 people left. If ther
    13·1 answer
  • To make a profit, Ethan knows that his prime cost of producing a part must be no more than $189.27. It takes 2 hours for a machi
    5·1 answer
  • What is 941 divided by 24
    7·2 answers
  • What angle pair is matched with ∠MLA to make alternate interior angles ?
    5·1 answer
  • What is the greatest common factor 10 and 20 have in common?
    8·1 answer
  • What is 26^4 +x)=65??
    10·1 answer
  • Zack has 18 socks in his drawer. 6 are blue, 6 are red, and 6 are green. How many socks will he need to pull out to be sure he g
    12·1 answer
  • Tell whether the lines through the given points are parallel, perpendicular, or neither.
    8·1 answer
  • John's father has a large collection of ties. He has 20 ties, and 8 of them are pink.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!