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
hjlf
4 years ago
7

there are 270 at Colfax Middle School, where the ratio of boys to girls is 5:4. there are 180 students at Winthrop Middle School

where the ratio of boys to girls is 4:5. The two schools hold a dance and all students from both schools attend. What fraction of the students at the dance are girls? Make sure to show all work.
Mathematics
1 answer:
ruslelena [56]4 years ago
4 0

Colfax:

Add the ratio numbers together:

5 + 4 = 9

Divide total students by that:

270 / 9 = 30

Multiply each ratio by 30:

Boys = 30 *5 = 150

Girls = 30 * 4 = 120


Do the same for Winthrop:

4 +5 = 9

180 /9 = 20

Boys = 20 * 4 = 80

Girls = 20 * 5 = 100


Total students = 270 + 180 = 450

Total Girls = 120 + 100 = 220


Fraction that are girls = 220 / 450 which reduces to 22/45

You might be interested in
What is the slope of the line?
mr Goodwill [35]

Answer:

infant/0

Step-by-step explanation:

it goes up forever

8 0
3 years ago
How many lbs are in a metric ton​
siniylev [52]

Answer:

2204.62

Step-by-step explanation:

4 0
3 years ago
What is 1/2 ÷ 2/3 =?
geniusboy [140]

Answer:

3/4

Step-by-step explanation:

1/2/2/3= 1/2*3/2 which is  3/4

Hope this helps plz mark brainliest :D

7 0
3 years ago
Read 2 more answers
Miss Stevens drove through a total of 36 intersections on her way home from work last week at four of every 16 intersections Mis
Nostrana [21]

Answer:

8 intersections

Step-by-step explanation:

Miss Stevens drove through a total of 36 intersections on her way home from work last week.

At four of every 16 intersections Miss Stevens had to stop for a red light before she could drive through .

This is calculated as:

36 intersections ÷ 16 intersections

= 2 4/16

= 2 1/4

At four of every 16 intersections Miss Stevens had to stop for a red light before she could drive through .

4 of every 16 intersections = stop for a red light

Hence:

16/4 = 4 intersections

Hence: 4 intersections = 1 stop for a read

The number of intersections that Miss Stevens had to stop for a red light is:

2 × 4 intersections = 8 intersections

6 0
3 years ago
A scientist wants to research the potential spread of germs by contact. she knows that the number of possible handshakes within
Viefleur [7K]
Given that <span>the number of possible handshakes within a group of n people is given by the equation:

</span>N= \frac{1}{2} (n^2-n)
<span>
Given that there are 105 people at a party, the number of possible handshakes is given by:

</span>N= \frac{1}{2} (105^2-105) \\  \\ = \frac{1}{2} (11025-105)=10920<span>
</span>
8 0
3 years ago
Other questions:
  • Solve the equation X-5/6=-1/6
    12·2 answers
  • Fill in the blank 31+____=61
    7·2 answers
  • Need help on #7 help if u know how to solve thanks!
    10·2 answers
  • Plz help me I can't get these wrong plz help meeeee
    15·2 answers
  • A worker makes $ 600,000 a month, how much do you earn in a year?
    8·2 answers
  • Why is 3/2 equal to 3/4
    15·2 answers
  • Answer all these pleasep
    15·2 answers
  • Solve pls brainliestsss
    13·2 answers
  • The function f(x) = –x2 – 4x + 5 is shown on the graph.
    13·1 answer
  • If it is known that a+b/a-b=c, find the following: 2a-2b/5a+5b
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!