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jeka94
4 years ago
5

Which of the following would be an acceptable first step in simplifying the expression (sinx)/(1 + sinx) ?. A.1/(cscx + sinx). B

.sinx + 1. C.(sinx(1 - sinx))/((1 + sinx)(1 - sinx))
Mathematics
2 answers:
svlad2 [7]4 years ago
7 0

Answer:

\frac{sinx(1-sinx)}{(1+sinx)(1-sinx)}

Step-by-step explanation:

\frac{sinx}{1+sinx}

To simplify the denominator part we multiply 1+sinx by its conjugate

The conjugate of 1+ sinx  is 1-sinx

Multiply both top and bottom by 1-sinx

\frac{sinx(1-sinx)}{(1+sinx)(1-sinx)}

So the acceptable first step in simplifying the expression is multiply by its conjugate at the top and bottom

Alex73 [517]4 years ago
5 0
We are given with the function <span>(sinx)/(1 + sinx). To simplify the equation, we multiply the denominator with its conjugate. Hence the expression becomes (</span>sinx)(1-sin x )/(1 + <span>sinx)(1-sin x). Then we convert the expression into </span>(<span>sinx)(1-sin x )/ cos^2 x. Using trigonometric functions, we can then simplify the expression.</span>
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Out of 25 children, 10 children like science subject and 15 children like English. 7 children like both the subjects.
sesenic [268]
<h2>Question:</h2>

Out of 25 children, 10 children like science subject and 15 children like English. 7 children like both the subjects. How many students don't like any subject?

<h2>Answer:</h2>

7 children.

<h2>Step-by-step explanation:</h2>

This can be solved by drawing a Venn diagram. The diagram is attached to this response.

<em>Given</em>:

Total number of children = 25

Number that like both subjects = 7

Number that like science = 10

Number that like English = 15

<em>Unknown</em>

Let the number of children that like science alone be s

Let the number of children that like English alone be e

Let the number of children that do not like any subject be x

s = Number that like science - number the like both subjects.

s = 10 - 7

s = 3

e = Number that like English - number the like both subjects.

e = 15 - 7

e = 8

Total number of children = Number that like science alone + Number that like English alone + Number that like both subjects + Number that do not like any subject.

<em>This implies that;</em>

25 = 3 + 8 + 7 + x

<em>Solving for </em><em>x</em><em> gives;</em>

25 = 18 + x

x = 25 - 18

x = 7

Therefore, 7 children do not like any subject.

3 0
3 years ago
Can someone help me please
bazaltina [42]

A: 8,250

B: 22

Step-by-step explanation:

A: 15 * 250 = 3,750 + 4,500 = 8,250

B: 10,000 - 4,500 = 5,500/250 = 22. 22 * 250 + 4,500 = 10,000

5 0
3 years ago
(x−3)÷9=11<br> help idk how to do this
Bess [88]

Answer:

102

Step-by-step explanation:

papa math will help you

x−3

9

=11

Step 1: Multiply both sides by 9.

x−3

9

=11

(

x−3

9

)*(9)=(11)*(9)

x−3=99

Step 2: Add 3 to both sides.

x−3+3=99+3

x=102

Answer:

x=102

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https://www.mathpapa.com/algebra-calculator.html?q=(x%E2%88%923)%5Cdiv9%3D11

x−3

9

=11

Step 1: Multiply both sides by 9.

x−3

9

=11

(

x−3

9

)*(9)=(11)*(9)

x−3=99

Step 2: Add 3 to both sides.

x−3+3=99+3

x=102

Answer:

x=102

Close Ad

Back to Algebra Calculator »

Share this page

Share URL:

https://www.mathpapa.com/algebra-calculator.html?q=(x%E2%88%923)%5Cdiv9%3D11

x−3

9

=11

Step 1: Multiply both sides by 9.

x−3

9

=11

(

x−3

9

)*(9)=(11)*(9)

x−3=99

Step 2: Add 3 to both sides.

x−3+3=99+3

x=102

Answer:

x=102

Close Ad

Back to Algebra Calculator »

Share this page

Share URL:

https://www.mathpapa.com/algebra-calculator.html?q=(x%E2%88%923)%5Cdiv9%3D11

6 0
3 years ago
Solve the system of equations and choose the correct ordered pair. 
konstantin123 [22]
The answer is A (9,4)
5 0
3 years ago
Read 2 more answers
What dose 2/6 + 3/6 =
meriva

Answer:

5/6 is ur answer

5 0
3 years ago
Read 2 more answers
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