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Elis [28]
3 years ago
14

Are these answers correct? Give details to win

Mathematics
1 answer:
ozzi3 years ago
7 0
I would yas yess thoes are correct but im not sure dont listen to me
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When constructing inscribed polygons and perpendicular lines how are the steps similar
bagirrra123 [75]
When constructing inscribed polygons and perpendicular lines, how are the steps similar?
<span>There are no similarities.</span>
8 0
4 years ago
Find the sum of this arithmetic series.<br> | 26 + 24.5 + 23 + 21.5 + ... - 17.5
emmainna [20.7K]

Answer:

127.5

Step-by-step explanation:

The given series is 26 + 24.5 + 23 + 21.5 + ... - 17.5

The first term of this series is a=26

The common difference is d=24.5-26=-1.5

The last term of the series is -17.5

The nth term is given by:

u_n=a+d(n-1)

26+-1.5(n-1)=-17.5

-1.5n=-17.5-26-1.5

-1.5n=-45

n=30

The sum of the series:

S_{n}=\frac{n}{2}(a+l)

S_{30}=\frac{30}{2}(26+-17.5)

S_{30}=127.5

8 0
3 years ago
A square has a side length of at+b. What is the perimeter of the square if t =c,simplified? A=7 B=10 C=9
EastWind [94]

The perimeter would probably be 292 because at+b is 7(9)+10, or 73 and there are 4 sides of a circle, so 73 times 4 is 292.

8 0
3 years ago
The planets move around the sun in elliptical orbits with the sun at one focus. The point in the orbit at which the planet is cl
gladu [14]

Consider the attached ellipse. Let the sun be at the right focus. Then perihelion is at right vertex on the x-axis and aphelion is at the left vertex on the x-axis.

The distances:

  • from perihelion to the sun in terms of ellipse is a-c;
  • from aphelion to the sun in terms of ellipse is a+c.

Then

\left\{\begin{array}{l}a-c=741,000,000\\a+c=817,000,000\end{array}\right.

Add these two equations:

2a=1,558,000,000 \\ \\a=779,000,000

and subtract first equation from the second:

2c=76,000,000 \\ \\c=38,000,000.

Note that b=\sqrt{a^2-c^2}, thus

b=\sqrt{779,000,000^2-38,000,000^2}=\sqrt{605,397,000,000,000,000}.

The equation for the planet's orbit is

\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1\Rightarrow \dfrac{x^2}{606,841,000,000,000,000}+\dfrac{y^2}{605,397,000,000,000,000}=1.

7 0
4 years ago
503,497 and 26,475 the value of 7 in?is ?times the value of 7 in ?
Vlad1618 [11]
1 times greater than 503,497
4 0
3 years ago
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