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wlad13 [49]
3 years ago
5

How do you do algebra

Mathematics
1 answer:
grin007 [14]3 years ago
4 0
Its not that hard... whats the question
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Cos2pi/7+cos4pi/7+cos8pi/7=1/8
Naddika [18.5K]

An equation is formed of two equal expressions. The given equation is not true.

<h3>What is an equation?</h3>

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

The complete question is: Check whether the given equation is true or not?cos2pi/7+cos4pi/7+cos8pi/7=1/8.


To know if the given equation, cos\dfrac{2\pi}{7}+cos\dfrac{4\pi}{7}+cos\dfrac{8\pi}{7}=\dfrac18 is true or not, both the sides of the equation are needed to be solved separately.

The value of cos\dfrac{2\pi}{7}+cos\dfrac{4\pi}{7}+cos\dfrac{8\pi}{7} when simplified is equal to -0.5, or the value can be written as -(1/2).

Since the right side of the equation is equal to -1/2, while the right side of the equation is 1/8. Thus, the given equation is not true.

Hence, the given equation is not true.

Learn more about Equation:

brainly.com/question/2263981

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6 0
3 years ago
Solve for d: C = pi x d
kkurt [141]

Answer:

d=cπ

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

5 0
3 years ago
Read 2 more answers
You already owed your friend $5. This morning, you borrowed $4 more, and this afternoon you paid back $3. How much money do you
prisoha [69]
$6 ? 5+4 =9
9-3 =6

I don't know if this is correct but this is how I would do it
6 0
3 years ago
Read 2 more answers
PLS help.........................
miss Akunina [59]

Answer:

1. $3.65

2. 4th graph

3. y = 1/2x

Step-by-step explanation:

1.

10.95 ÷ 3 = 3.65

2.

The fourth option (one on the bottom) makes the most sense.

3.

Rise/Run

y = 1/2x

6 0
3 years ago
Cuales son las fuentes primarias​
Tamiku [17]

Answer:

Testigos de primera mano

6 0
3 years ago
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