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Alja [10]
3 years ago
8

Find the sum of the interior angle measure of a regular polygon with 20 sides

Mathematics
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

3240°

Step-by-step explanation:

For a regular icosagon,

sum of interior angles measure=180(n-2)°

180(20-2)

180(18)=3240°

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A vehicle originally travelled at 30 kph. Now its speed is increased to 10 kph more than twice its original speed. What is the s
Helen [10]

Answer:

20kph

Step-by-step explanation:

10 * 2 = 20

8 0
3 years ago
Find the ninth partial sum of infinite sumnation 3i-4
snow_tiger [21]
\bf \sum\limits_{i=1}^9\ 3i-4\implies \sum\limits_{i=1}^9\ 3i-\sum\limits_{i=1}^9\ 4\implies 3\sum\limits_{i=1}^9\ i-\sum\limits_{i=1}^9\ 4
\\\\\\
3\cdot  \cfrac{9(9+1)}{2}-(9\cdot 4)

and surely you know how much that is.
3 0
3 years ago
Write 10 hundredths in standard form
artcher [175]
Ten hundredths: 10/100 = 1/10
Simplifies to: 0.1 (one-tenth) 
7 0
3 years ago
In △ABC, m∠A=52°, c=11, and m∠B=19°. Find a to the nearest tenth.
Ugo [173]

From the problem we have

In △ABC, m∠A=52°, c=11, and m∠B=19°.

Draw the diagram with the help of given information, (see the attached image)

Now using Sine Law in the Triangle ABC, we can write

Now from Triangle ABC , we can write

\frac{a}{sin52}=\frac{11}{sin109}  \\

Now simplify , we get

\Rightarrow a=\frac{11}{sin109}*sin52\\ \\  \Rightarrow a=\frac{11}{0.9455}*0.7880\\ \\ \Rightarrow a=9.1676 \approx 9.2\\

8 0
3 years ago
Find the exact values of the six trigonometric functions of θ if θ is in standard position and the terminal side of θ is in the
mixer [17]
5y - 2x + 1 = 0.
5y = 2x-1.

y = 2/5 x - 2/5

this tells us that tan(theta) = 2/5
sin(theta)/sqrt(1-sin^2(theta)) = 2/5
x/sqrt(1-x^2)=2/5
x^2/(1-x^2)=4/25
25x^2=4-4x^2
29x^2=4
x^2=4/29
x = -2/sqrt(29) because quadrant III
cos(x) = sqrt(1-4/29) = -5/sqrt(29)


tan(theta)=2/5
cos(theta)=-5/sqrt(29)
sin(theta)=-2/sqrt(29)
cot(theta)=5/2
sec(theta)=-sqrt(29)/5
csc(theta)=-sqrt(29)/2
7 0
3 years ago
Read 2 more answers
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