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Soloha48 [4]
4 years ago
12

Find the value of x

Mathematics
2 answers:
Vika [28.1K]4 years ago
7 0
84 degrees is the answer

Tasya [4]4 years ago
6 0
First, lets assign label to the interior angles of the triangle.
Since angle 130° and angle A are on the same straight line, they are supplementary angles; therefore:
130+A=180
A=180-130
A=50

Next, angle B and angle 134° are also on the same straight line, so they are supplementary as well, which means:
B+134=180
B=180-134
B=46

Now, to find angle C remember that the sum of the interior angles of a triangle is 180°; therefore:
A+B+C=180
50+46+C=180
C=180-50-46
C=84

Finally, we also know that angle x and angle C are on the same line, so they are supplementary angles just like before; therefore:
x+C=180
x+84=180
x=180-84
x=96

We can conclude that the measure of our angle x is 96°.

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6. In Diagram 1, NPQRSTUV is a regular octagon. NVW and STW are straight lines.
Sveta_85 [38]

Answer:

  A.  37.5°

Step-by-step explanation:

∠SPT can be considered an inscribed angle in the circumcircle. In that circle, arc ST would have a measure of 360°/8 = 45°. Angle y° is half that measure, so is 22.5°.

The external angles of a regular octagon are 360°/8 = 45°, so that is the measure of angles UTW and UVW. It is also the amount by which reflex angle TUV exceeds 180°.

The sum of the interior angles of quadrilateral TUVW is ...

  45° +225° +45° +3x° = 360°

Then 3x° = 45° and x° = 15°.

Then the sum of interest is ...

  x° + y° = 15° + 22.5° = 37.5°

3 0
3 years ago
In a community survey, 13/20 of the residents claim to recycle. If there are 720 residents, how many residents claim to recycle?
-BARSIC- [3]

Answer:

468

Step-by-step explanation:

make a proportion:

13/20 = x/720

20x?=720

20x36=720

whatever you do to the bottom you do to the top

13x36=468

468/720 residents claim to recycle

7 0
3 years ago
SOMBODY PLEASE HELP
arsen [322]

Step-by-step explanation:

Step 1: 180degree-99degree

answer gives you 81degree

6 0
3 years ago
…name three points that are collinear
Elena L [17]

Answer:

  • D. Points D, C and A

Step-by-step explanation:

Points D, C and A are collinear as DC, CA and DA have same slope of 1/3.

5 0
3 years ago
In ΔIJK, k = 7.6 cm, j = 7.5 cm and ∠J=116°. Find all possible values of ∠K, to the nearest 10th of a degree.
Andre45 [30]

Answer:

No Possible Triangles

Step-by-step explanation:

Deltamath

7 0
3 years ago
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