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kumpel [21]
4 years ago
9

I NEED HELP WITH BOTH OF THESE

Mathematics
1 answer:
Marianna [84]4 years ago
6 0

Answer:

first one is C

the second it is A

Step-by-step explanation:

the equation of a circle=(x-h)^2 + (y-k)^2 = r^2

h and k are the coordinate of the origin of a circle

to find the origin  which is the midpoint of the diameter which has end points

(9,1) and (1,9)

h=9+1/2 = 10/2=5

k=9+1/2 = 10/2=5

(x-5)²+(x+5)²=r²

find r which is the half distance of the diameter

d of diameter : √(x2-x1)²+(y1-y2)²

d=√(9-1)²+(1-9)²

d=√8²+8²=8√2

radius=8√2/2=4√2

(x-5)²+(x+5)²=r²

(x-5)²+(x+5)²=(4√2)²

(x-5)²+(x+5)²=32

TR>TS the sides RS and TS are congruent opposite angles are equal.

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What is the sum of any rational number and it's opposite
AnnyKZ [126]
To figure out this problem, you can look at formulas, or you can try out a few problems. There are many people that prefer one or the other in my class, so I will show you both. :)

Before I show you either of these, I'm going to define rational numbers and explain some things so that you can understand why we do what we do. Make sure to remember things like this because when you get to algebra (I'm in algebra), you need to know all of this stuff!  :)

A rational number is any number that can be written in a over b form (a/b) or as a fraction. A rational number can be positive or negative because you can put positive and negative numbers into a fraction. Decimals can also be rational numbers because things such as .3 can be written as 3/10. So, depending on what number you have, there is always an opposite. 

To find an opposite number, you have to basically find the absolute value (how far the number is from zero), double that number, and add it from the original number. Or, if you want to make it worlds easier, you can just make the number the opposite inverse. So, if it is -4, the opposite is 4. If the number is 7, then the opposite is -7. What is the sum between both of those examples? Zero.

Here is the formula: a+(-a)=0, (-a)+a=0
Here is some examples: (-5)+5=0, 8+(-8)=0

Thanks so much for the opportunity to answer your question. I hope this helped! :)
5 0
3 years ago
Read 2 more answers
Solve: sin^2 x + sin x cos x = 0
denis23 [38]
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sin x = 0 ;  x 1 = k π ;  k ∈ Z
sin x + cos x  = 0  / ²
sin² x + 2 sin x cos x + cos² x = 0
2 sin x cos x + 1  =0
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3 0
3 years ago
What is a complete graph.
Kay [80]

Answer:

A complete graph is 100 or over

Step-by-step explanation:

hope this helps G

3 0
2 years ago
Hi doe s anyone know the answer
Svetlanka [38]

Answer:

<u>Regular Polygon:</u>

<em>C, E  </em>(All sides and angles are equal)

<u>Irregular Polygon:</u>

<em>A, B, </em>(Not all sides or angles are equal)

<u>Not a Polygon</u>

<em>E, F </em>(There are curves and not a closed shape)

Hope this helps! Comment if you have any questions :)

<em />

5 0
3 years ago
Read 2 more answers
You can see Tali's current age and birth year in the table below. You will also find the
lana66690 [7]

My aunt's age is 43.

My brother's age is 16.

My mother's age is 41.

<h3>What are the current ages?</h3>

In order to determine the current ages, the year the ages are been calculated has to be determined first. The year can be determined by adding my Tali's age to the year he was born.

2008 + 13 = 2021

What is my aunt's age = 2021 - 1978 = 43

What is my brother's age = 2021 - 2005 = 16

What is my mother's age = 2021 - 1980 = 41

To learn more about subtraction, please check: brainly.com/question/854115

5 0
2 years ago
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