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Vesna [10]
3 years ago
12

I need help on 11-13 please i need this done asap! Can someone help me out

Mathematics
2 answers:
marin [14]3 years ago
7 0
Learn this the sum of angles in a polygon is (n-2)* 180. n is the number of sides or angles in the polygon.
Alex777 [14]3 years ago
4 0
13 is 141. A octagon has 1080 degrees and if you add all the angles up you get 939 and 1080-930=141
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Two airplanes have left the dallas airport. one airplane is 140 miles west of the airport and has an altitude of three miles, wh
matrenka [14]
To start you would count 140 miles and 90 miles and add that together because they are at least that far apart because they are in different directions with the measurement starting at the airport.  So you have 230 miles.  Then you would know that plan A is 3 miles up and plane B is only 2 miles up, so there's one more mile between them.  So you can add that and say 231 miles.
6 0
3 years ago
3. Find the area of the sector. Use 3.14 for the value
Yuri [45]
I dont know sorry,hope you find someone that helps tho!!
3 0
3 years ago
PLEASE HELP ME
krok68 [10]
<h3>#29</h3>

<u>Find the value of x:</u>

  • 7x - 2 = 55 + 4x (as corresponding angles)
  • 7x - 4x = 55 + 3
  • 3x = 57
  • x = 19

<u>Find the value of y:</u>

  • y = 7x - 2 (as alternate exterior angles)
  • y = 7*19 - 2
  • y = 131
<h3>#30</h3>

<u>Find the value of x:</u>

  • 14x - 34 = 9x + 1 (as alternate interior angles)
  • 14x - 9x = 1 + 34
  • 5x = 35
  • x = 7

<u>Find the value of y:</u>

  • y + (9x + 1) = 90 (as complementary angles)
  • y = 90 - 9*7 - 1
  • y = 26
4 0
3 years ago
Part a: write an algebraic expression for 6 more than 7 times a number. (5 points)
laila [671]

<u>Part A</u>

If the number is n, then the expression is 7n+6.

<u>Part B</u>

Three times the sum of a number and 8.

5 0
2 years ago
a newly-planned tree needs to be staked with three wires. each wire is attached to the trunk 3ft. above the ground, and then anc
Alexandra [31]
       | \
3ft   |   \
       |_ _\
        4ft
a²+b²=c²           Pythagorean Theorem
3²+4²=c²           simplify
c=√(3²+4²)        isolate c
c=5

c*6=answer      because you need wire for 6 trees
5*6=answer
answer=30

You will need 30 feet of wire
4 0
3 years ago
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