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Virty [35]
3 years ago
5

What is the sum of the measures of the interior angles of a 20-sided figure?

Mathematics
1 answer:
Reika [66]3 years ago
6 0
18, I believe 360/20 equals 18.
You might be interested in
Jen Butler has been pricing​ Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 132.
laiz [17]
Let a=price of adult ticket
let c=price of a child's ticket
start out by writing the following system of equations:
3a+4c=132
2a+3c=94
then, multiply the first equation by 2, and the second equation by 3 to get the following system of equations:
6a+8c=264
6a+9c=282
subtract the like terms to get the following equation:
-c=-18
divide both sides by -1 to get rid of the negative to get the price of a child's ticket to be $18. to find the price of an adult ticket, pick one of the original equations to substitute the 18 in for c to find a. for example:
2a+3c=94
2a+3(18)=94
2a+54=94
-54 -54
2a=40
2 2
a=20

or if you decide to use the other equation:
3a+4c=132
3a+4(18)=132
3a+72=132
-72 -72
3a=60
3 3
a=20
either way, you still get an adults ticket to be $20 and a child's ticket to be $18.
8 0
3 years ago
The diagram shows a right-angled triangle.
Karo-lina-s [1.5K]

Answer:

sorry j don't have my calculator but

sine of angle x°=opposite 6cm/9cm

byee

8 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%20%5Cfrac%7B49%7D%7B81%7D%20%7D%20" id="TexFormula1" title=" \sqrt{ \frac{49}{81
NNADVOKAT [17]
7/9 and 0.7 one is points and one is a fraction
7 0
4 years ago
Read 2 more answers
How do you solve and simplify <br> 2/5+1/4+7/10=
Alchen [17]

Hello!

<em><u>Answer: ⇒ 27/20</u></em>

Step-by-step explanation:

\frac{8}{20}+\frac{5}{20}+\frac{14}{20}

Since the denominators are equal, then combine the fractions.

\frac{8+5+14}{20}

Add by the numbers.

8+5+14=27

=\frac{27}{20}

Hope this helps!

Thank you for posting your question at here on brainly.

Have a great day!

-Charlie

4 0
3 years ago
Read 2 more answers
Simplify.055-(0.9-0.8).4
tiny-mole [99]
54.96 Hope this helps
7 0
3 years ago
Read 2 more answers
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