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IRINA_888 [86]
4 years ago
5

For which polygon is the sum of the interior angles equal to 540?

Mathematics
2 answers:
seraphim [82]4 years ago
7 0

Answer:

Pentagon

Step-by-step explanation:

to find the sum of the interior angle, use the equation sum=180(n-2) degrees, with the number of sides being n

sum= 180(5-2) degrees

sum= 540 degrees

r-ruslan [8.4K]4 years ago
5 0

Answer:the first one

Step-by-step :ed2020

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Simplify the problem thank you
NikAS [45]

Given the expression:

\displaystyle \large{ \sqrt[3]{ - 125} }

Definition:

\displaystyle \large{ y  = \begin{cases}   \pm \sqrt[n]{x}  \longrightarrow n  = (2,4,6,8,...)  \:  \: (x \geqslant 0) \\   \sqrt[n]{x}\longrightarrow n = (1,3,5,7,...) \:  \: (x \in \R) \end{cases}}

First, factor the -125. -125 comes from (-5)×(-5)×(-5) or (-5)^3.

\displaystyle \large{ \sqrt[3]{ ( - 5) \times ( - 5) \times ( - 5)} }

Because if (-5)^2 = 25 then 25×(-5) again will be -125.

Since this is the cube root, we have to pull out 3 terms in one. There are 3 fives that we can take off and therefore,

\displaystyle \large \boxed{ - 5}

5 0
3 years ago
Read 2 more answers
2x - y = 5<br> x + 3y = 7<br><br> What is the value of the system determinant?
zubka84 [21]
The answer is (x,y) =(28/11, -21/11)
4 0
4 years ago
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(−7c+8d)0.6<br><br> khan academy pls help.
Burka [1]

Answer:

  • \sf -4.2c+4.8d

Step-by-step explanation:

\sf \left(-7c+8d\right)\cdot \:0.6

\sf 0.6\left(-7c+8d\right)

Apply distributive property

\sf 0.6\left(-7c\right)+0.6\times \:8d

\sf -4.2c+4.8d

Have a good day!

4 0
3 years ago
The total cost ,c, of renting a Canoe for n hours can be represented by a system of equations. Write the system of equations tha
Brut [27]

Answer:  \left \{ {{c=28} \atop {c=3n+13}} \right.

Step-by-step explanation:

<h3> The missing data is: " The cost of renting a conoe to use on River Y costs $28. The cost of renting a conoe to use on River Z costs $3 per hour plus a $13 deposit".</h3>

Let's find the first equation.

You know that the cost of renting a conoe to use on River Y costs $28. This is:

c=28

To find the second equation you need to remember the Slope-Intercept form of a Linear equation. This is:

y=mx+b

Where "m" is the slope and "b" is the y-intercept.

Since the cost of renting a conoe to use on River Z costs $3 per hour plus a $13 deposit, you can identify that:

m=3\\b=13

Therefore,  the equation that represents this situation is:

c=3n+13

So, the System of equations that could be used to find the total cost "c" of renting a canoe for "n" hours, is:

\left \{ {{c=28} \atop {c=3n+13}} \right.

8 0
3 years ago
What number multiplied by 7/8 equals 10
enot [183]

Answer:

11.43

Step-by-step explanation:

4 0
3 years ago
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