1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bija089 [108]
3 years ago
5

Can someone help me understand this and show work

Mathematics
1 answer:
ELEN [110]3 years ago
7 0

So first off, the most important thing in Geometry is to know the relationship between angles and lines. A vertical line is 180 degrees, a line bisecting something means that whatever is bisected is equal to the other side, vertical angles are equal to each other, etc. Once you understand these it will be a breeze. Make sure you always write down the numbers you find out on the problem in its place so you can keep on track and visualize it better!

8) The 2 angles represented by the equations are being bisected by a vertical line. So that means they are equal to each other and we can solve by putting that into an equation. 5x-46=2x+5, 3x-46=5, 3x=51, x=17. Now just plug in 17 for x. 5(17)-46, 85-46=39. <PQR=39

9) A linear pair is just 2 angles that make a 180 degree angle so, 1, 4, & 5

10) A vertical angle is an angle that is equal and opposite to the other. In this case the only clear one is 1 & 4 (Answer) but angles 2 and 3, when added, would equal angle 5.

11) Supplementary means it equals 180 degrees so the same as #9. 1 & 5, 4 & 5

12) Set 3x+20 and y-20 have different variables, it is easier to use x and 3x+20.Both of these angles form a linear pair, which means they equal 180 so set both of them equal to it. 3x+20+x=180. Combine like terms. 4x+20=180, 4x=160, x=40. Now plug in 40 for x. Since one angle is just x and x=40, subtract that from 180 to find the other angle. We now know y-20=140 so we can simply work out the equation. y-20=140, y=160. Our final answer is x=40 and y=160.

13) (sorry its too blurry I can't risk it but i'm sure you get it now) Just set the angles equal to each other to find the first angle and subtract the angle from 180 to get the other angle.

14) Line AOC equals 180 so that means if <AOB =90 then <BOC equals 90. Line BOE is also a supplementary angle meaning if we add up all the numbers we now know on the line (90,75) they would equal 165. 180-165= 15 meaning <COD=15 degrees. Since <COD is 15 and <DOE is 75 we can add those up and subtract it from 180 (then add 75 again) to find <AOD. 75+15=90 (right angles are 90). 90+75=165, so <AOD=165 degrees.

I hope I didn't get anything wrong I was in a bit of a rush. Just remember the rules and the relationships and you'll do great!


You might be interested in
Which strategy would you use to find 2+8? a) doubles plus 1. b)count on. c) doubles. d) doubles minus 1
Gekata [30.6K]
You would count on.

I hope i am right
8 0
3 years ago
Please help me volume is 9881.25 but yeah please help mee
erik [133]

Answer:

20.4

Step-by-step explanation:

see image

5 0
1 year ago
Please help me with this question
morpeh [17]

Answer:

19 and 26

Step-by-step explanation:

The other 2 cant work because that would make the total Degrees inside the triangle more than 180 (this is impossible)

7 0
2 years ago
Read 2 more answers
I attached the picture of the problem I need solved fast ​
Mademuasel [1]
The answer to the equation is 5 7/15
4 0
3 years ago
Read 2 more answers
Michelle has a jar of quarters and dimes totalling to 3.10 if there are sixteen coins in the jar how many more quarters are ther
Sav [38]
Q + d = 16....q = 16 - d
0.25q + 0.10d = 3.10

0.25(16 - d) + 0.10d = 3.10
4 - 0.25d + 0.10d = 3.10
-0.25d + 0.10d = 3.10 - 4
-0.15d = -0.90
d = -0.90/-0.15
d = 6...dimes

q + d = 16
q + 6 = 16
q = 16 - 6
q = 10...quarters

so there are (10 - 6) = 4 more quarters then dimes
5 0
3 years ago
Other questions:
  • A monument in the shape of a right triangle sits on a rectangular pedestal that is 5 meters high by 11 meters long. The longest
    10·1 answer
  • Hey every one join my google class room the code is ftqn2mq join so i can help you with homework
    11·2 answers
  • You flip a coin and what is p (not tails
    9·2 answers
  • Volume of sphere if the radius is 6?
    14·1 answer
  • The choices are<br> a) 36xy^3<br> b) 36xy^2<br> c) 36xy<br> d) 36x^2y^6
    13·2 answers
  • 3x+5⁰ 2x-25⁰ supplementary angles​
    7·2 answers
  • La suma de dos números enteros que tienen signos diferentes es:
    6·2 answers
  • Immediate help needed !!!!!!!! plz help me !!!! with this question​
    11·1 answer
  • Grocery Store A is selling bananas for $0.75 for 12 pound. Grocery Store B is selling 5 pounds of bananas for $3.75.
    7·1 answer
  • The triangle and rectangle have the same perimeter.find the value of x.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!