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
SIZIF [17.4K]
3 years ago
8

There are 12 boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio of

boys to girls to remain the same?
Mathematics
2 answers:
Shkiper50 [21]3 years ago
7 0
Number of boys in the gym class = 12
Number of girls in the gym class = 10
then
Ratio of boys to ratio of girls = 12:10
                                               = 6:5
Now
Number of boys joining the gym class later = 6
So after the new boys join the number of boys in the gym class becomes = 18
The ratio of boys to girls have to remain the same
Let us assume that the number of girls that need to join the gym class = x
Then
6/5 = 18/(x + 10)
6(x + 10) = 18 * 5
6x + 60 = 90
6x = 90 - 60
6x = 30
x = 30/6
   = 5
So the number of girls that need to join the gym class to keep the ratio same is 5. I hope the procedure is clear enough for you to understand.


Vanyuwa [196]3 years ago
6 0
So 12 and 10
if 6 boys joined then it is now
12+6=18
so we now need to have
12:10=18:x
solve for x
convert to fraction
12/10=18/x
multiply both sides by x
12x/10=18
multiply both sides by 10
12x=180
divide both sides by 12
x=15
so from 10 to 15 is a difference of 5 so 5 girls need to join

the answe ris 5
You might be interested in
What happens when a rational number is added to an irrational number
Whitepunk [10]

The answer to your question is,

Each time they assume the sum is rational; however, upon rearranging the terms of their equation, they get a contradiction (that an irrational number is equal to a rational number). Since the assumption that the sum of a rational and irrational number is rational leads to a contradiction, the sum must be irrational.

-Mabel <3

6 0
3 years ago
The first 2 terms of an ap is -2 and 3 how many terms are needed for the sum to be equal to 306 ​
Zepler [3.9K]

Answer:

306

Step-by-step explanation:

-2 + 3 = 1

so really it would take 306 times to get to this

6 0
3 years ago
38600 mg = n dag what does n equal???
Vlad [161]
Answer:
n = 3.68

Explanation:
We know that:
1 mg is equivalent to 0.0001 dag
To convert 38600 mg to dag, we will simply use cross multiplication as follows:
1 mg ..............> 0.0001 dag
38600 mg ......> n

n = (38600*0.0001) / 1
n = 3.68

Hope this helps :)
3 0
3 years ago
First is brainliest please anwer Asap
vodomira [7]

Answer:

21 and 10 :) hope it helps

Step-by-step explanation:

4 0
3 years ago
Please help and thank you
kondaur [170]

Answer:

Step-by-step explanation:

Let's see how well I can explain this. \frac{\pi}{6} is the same as a 30 degree angle which is in quadrant 1. If you picture the unit circle, right in the center of it is the origin. If you draw a straight line from 30 degrees and through the center (the origin), you will automatically "connect" with the reference angle of 30 (this is true for ALL angles on the unit circle). This puts us in quadrant 3. In quadrant 3, x is negative and so is y. So the terminal point of the reference angle for 30 degrees has the same exact values, but both of them are negative (again, because both x and y are negative in quadrant 3). I can't see your choices but the one you want looks like this:

(-\frac{\sqrt{3} }{2},-\frac{1}{2})

3 0
2 years ago
Other questions:
  • Write the equation of a line that has a slope of 7 and a y-intercept of -3.
    11·1 answer
  • Anybody know the answer to 4 and 5 I really could use some help
    14·1 answer
  • If c=3 what is 6 x (9-c)
    6·1 answer
  • Is 121 an irrational number?
    5·1 answer
  • Which decimal is equivalent to<br> NI<br> OA) 0.416<br> B) 0.416<br> C) 0.416<br> OD) 0.416
    8·1 answer
  • If a man sold for an article for rs150 gaining 50% thenn the cost price of the article is
    6·1 answer
  • What is the greatest common factor of 28 and 56
    12·1 answer
  • What is 75% of 102 2/3
    9·1 answer
  • Can someone help me with this?
    7·1 answer
  • Estimate √700 to one decimal place.​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!