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
Elenna [48]
3 years ago
10

Three sevenths of a children's choir are boys. If there are 12 boys in the choir, how many children, c, total are in the choir?

Solve for c.
Mathematics
2 answers:
ruslelena [56]3 years ago
6 0

Answer:

Here c represents the total number of children  in choir.

As per the statement:

Total number of boys in choir = 12

It is also given that: Three sevenths of a children's choir are boys.

⇒ Total number of boys = \frac{3}{7} c

or

12 = \frac{3}{7}c

By cross multiply we have;

84 = 3c

Divide both sides by 3 we have;

c = 28

Therefore, the total number of children in choir is 28 children


Zolol [24]3 years ago
3 0
28 kids are in the choir. Its 3 * 4 = 12. Then Its 3/7 * 4 = 12/28. Ther you gooooo.
You might be interested in
In the space below, identify the rate of change using the statement: The rate of change is
Svetlanka [38]

Answer:57465

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Root 3 cosec140° - sec140°=4<br>prove that<br><br>​
Lorico [155]

Answer:

Step-by-step explanation:

We are to show that \sqrt{3} cosec140^{0} - sec140^{0} = 4\\

<u>Proof:</u>

From trigonometry identity;

cosec \theta = \frac{1}{sin\theta} \\sec\theta = \frac{1}{cos\theta}

\sqrt{3} cosec140^{0} - sec140^{0} \\= \frac{\sqrt{3} }{sin140} - \frac{1}{cos140} \\= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\

From trigonometry, 2sinAcosA = Sin2A

= \frac{\sqrt{3}cos140-sin140 }{sin140cos140} \\\\=  \frac{\sqrt{3}cos140-sin140 }{sin280/2}\\=  \frac{4(\sqrt{3}/2cos140-1/2sin140) }{2sin280}\\\\= \frac{4(\sqrt{3}/2cos140-1/2sin140) }{sin280}\\since sin420 = \sqrt{3}/2 \ and \ cos420 = 1/2  \\ then\\\frac{4(sin420cos140-cos420sin140) }{sin280}

Also note that sin(B-C) = sinBcosC - cosBsinC

sin420cos140 - cos420sin140 = sin(420-140)

The resulting equation becomes;

\frac{4(sin(420-140)) }{sin280}

= \frac{4sin280}{sin280}\\ = 4 \ Proved!

3 0
3 years ago
There are a total sales of 2,000 dollars on Monday on Tuesday sales dropped 10% on Wednesday sales dropped another 20% compared
tatyana61 [14]
The net change would be 60%.



Hope this helps! <3


Sophia
5 0
3 years ago
. Place the parenthesis in the correct place to make the expression below true. 19 - 8 * 10 + 4 + 8² = 178​
r-ruslan [8.4K]

Answer:

19 - (8) * (10) + 4 + 8² = 178​

3 0
3 years ago
The prices of the 10 most popular truck tires at a tire store are shown here. What's the range of the prices?
photoshop1234 [79]
D- $48.50

you have to subtract the largest and the smallest number to find the range
3 0
4 years ago
Other questions:
  • Sketch a graph of f(x)
    12·1 answer
  • Please help. Picture attached.
    10·1 answer
  • Identify each solid figure
    5·2 answers
  • Which pair of expressions is equivalent using the Associative Property of Multiplication?
    15·1 answer
  • At the market, 6 batteries cost $10.38. How much do 8 batteries cost?
    7·2 answers
  • Suppose the one-month billing cycle for a credit card ends on the last day of the month. On which of the following end-of-month
    9·2 answers
  • How can you avoid paying interest on your credit card purchases?
    6·1 answer
  • Shavon has a gift box shaped like a rectangular prism. The box is 12 inches long, 8 inches wide, and 3 inches high. What is the
    5·1 answer
  • 832.59÷100=
    14·1 answer
  • 23.21
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!