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
Simora [160]
3 years ago
14

A school has 63% percent girls and 37%, percent boys. If 23%, percent of the girls wears contacts and 42%, percent of the boys w

ears contacts, what percent of all students wears contacts?
Mathematics
1 answer:
Degger [83]3 years ago
4 0

Answer:

30% students

Step-by-step explanation:

Let x be the number of total students of a school.

63% are girls then total number of girls = (0.63)x

37% are boys then total number of boys = ( 0.37)x

Now 23% of girls wear contacts then total number of girls

= (0.63x) × 0.23

=  (0.1449x)

And 42% of boys wear contacts then total number of boys wearing contacts

= (0.37x) ( 0.42)

= (0.1554)x

Total students wears contacts = ( 0.1449x) + (0.1554x)

                                                  = (0.3003x)

Percentage of students wear contacts = \frac{\text{total students wear contacts}}{\text{total students in school}} × 100

= \frac{0.03003x}{x} × 100

= 30%

All 30% students wear contacts.

You might be interested in
Jayne says that 0.45 is equal to 4/10 is she correct? Explain
MissTica

<span>
No, it is not correct.</span>

<span> </span>To compare this answer, do this<span>.</span>

<span>\frac{45}{100} is Jayne's 0.45 in fraction form.</span>

<span /><span>If you simplify it you get \frac{7}{20}</span>

<span><span>\frac{4}{10}≠<span>\frac{7}{20}</span></span></span>

6 0
3 years ago
Read 2 more answers
Hello, I was wondering if someone would be able to help me with this problem I'm on. Thanks :)
koban [17]

<span><span>Price after trade discount = $14,000 - (40% trade discount)

Price after trade discount = $14,000 - ($14,000 * 0.4)

Price after trade discount = $14,000 - ($5,600)

Price after trade discount = $8,400 </span>Price after trade discount = $8,400

2/10 EOM price = $8,400 - (2% discount)

2/10 EOM price = $8,400 - ($8,400 * 0.02)

2/10 EOM price = $8,400 - ($168)

2/10 EOM price = $8,232

So Intel will pay $8,232 on August 5.
Hope this helps.
</span>
4 0
3 years ago
What is the measure of angle A?
I am Lyosha [343]

First you have to find the angle B (check attachment)

B = 180^{\circ} - 137^{\circ} = 43^{\circ}\\

Then you can find the last angle inside the triangle, which I'll call C

C = 180^{\circ} - 102^{\circ} - 43^{\circ} = 35^{\circ}

Now you can find angle A

A = 180^{\circ} - C = 180^{\circ} - 35^{\circ} = 145^{\circ}

3 0
3 years ago
What is the gallon percentage of 96 ounces
Licemer1 [7]
Well
8oz= 1 cup
1 cup= 2 pint
2 pint= 1 Quart
4 Quart= 1 Gallon
so you do the math
5 0
3 years ago
Read 2 more answers
3n to the 2nd power+2
steposvetlana [31]

Answer:

11n

Step-by-step explanation:

We don't know the value of N, so we leave that the same.

3 to the second power, (3x3)= 9.

We have to add 2 to 9, so 9+2=11

Add your n to the end, and your answer is 11n.

3 0
3 years ago
Other questions:
  • Chico walks 3/5 mile to the library. Nikki walks 1/4 the distance that Chico walks to the library. How far does Nikki walk?
    10·1 answer
  • Samuel order four did from an online music stores. Each dvd cost 9.99$. He has a 20% discount code and sales tax is 6.75%. What
    6·1 answer
  • If the parent function y= csc x goes through a transformation to produce 1+csc (x-π), what is the resultant shift in the functio
    10·1 answer
  • Solve -2(x - 4) - 7 &gt; - 6
    11·1 answer
  • At what speed does a car travel if it goes 375 miles in 7 hours<br> Explain
    14·2 answers
  • In an effort to prepare for retirement, Zeus decided to sell off some of his powers to Poseidon. Each box of powers contained 4
    12·1 answer
  • Order these numbers from least to greatest.<br> 17<br> 9<br> 8.49,8<br> 20<br> 7.479,<br> 2
    7·2 answers
  • Heya! ^^
    14·2 answers
  • Kim Barney pays a $290.00 annual premium for an insurance plan with a $500 deductible. The company pays 80% of the remaining exp
    9·1 answer
  • Amina and cara take a math test amina scores 40 marks,cara scores 60 marks write the ratio of amin to cara's marks
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!