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
dezoksy [38]
3 years ago
12

Find the value of x. I need help please!

Mathematics
1 answer:
Blababa [14]3 years ago
8 0

Answer:

24

Step-by-step explanation:

Keep in mind that exterior angles are mentioned. So let's find the interior ones. Note that the interior and exterior angles are forming straight lines. So something plus 84 equals 180 degrees.  

180-84=96

180-120=60

The sum of three angles of a triangle is 180 degrees. X is an angle. So we can form an equation to represent this. Then just solve for x!

96+60+x=180

156+x=180

     x=24

You might be interested in
Please help with p and q<br> maths geometry
baherus [9]

Step-by-step explanation:

p)

in a very similar way, as the sum of all 4 angles in a triangle is always 180°, so is the sum of all angles in a quadrilateral (a polygon with 4 sides) 360°.

just look at rectangles at special representatives of such quadrilaterals.

now that we know this, we can simply say, the sum of all angles in our shape must be 360° :

(8x + 2) + (4x + 2) + (x - 2) + (5x -2) =

= 18x = 360

x = 20

A = 8×20 + 2 = 162°

B = 4×20 + 2 = 82°

C = 5×20 - 2 = 98°

D = 20 - 2 = 18°

a trapezium has the following properties (in the UK):

like other quadrilaterals, the sum of all the four angles of the trapezium is equal to 360°.

a trapezium has two parallel sides and two non-parallel sides.

the diagonals of a regular trapezium bisect each other.

in the USA for example the request for 2 parallel sides does not exist.

we have proven the point with the angle sum.

the other 2 are given by the diagram.

so, yes, it is a trapezium.

q)

the sum of all interior angles of a polygon is

(n - 2) × 180°

n being the number of d sides.

we have here a regular pentagon (5 equal sides).

the size of the angle at any vertex is then

(5 - 2) × 180 / 5 = 3 × 180 / 5 = 3×36 = 108°.

so, theta = 108°.

alpha + beta = 108°

ABE is an isoceles triangle.

so, beta = angle 1

beta + angle 1 + theta = 180

2×beta + 108 = 180

2×beta = 72

beta = 36°

therefore,

alpha = 108 - beta = 108 - 36 = 72°

4 0
1 year ago
What is the difference between 3cm and 4cm
alisha [4.7K]

Answer:

i think its just 1cm

Step-by-step explanation:

4-3=1 or maybe its different from what your asking

3 0
3 years ago
Read 2 more answers
Ashley has 4 pairs of low-top sneakers, 7 pairs of high-top sneakers, 3 pairs of sandals, and 1 pair of boots. What is the ratio
Citrus2011 [14]
The ratio of low-top to the total number of shoes is 4:15
6 0
3 years ago
Given a rhombus, a square, and a rectangle, what must be true of all three quadrilaterals?
Yuliya22 [10]
<span>C.

The diagonals are perpendicular.
</span>
8 0
3 years ago
Please Help?!
V125BC [204]

Answer:

nile blue should be the correct answer

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Please help! if anybody is good at equivalent polynomial expressions please help!!
    9·1 answer
  • For the relation S:{(2,3),(−1,4), (1,6)}. a Find the domain. B. Find range
    11·1 answer
  • 4. Which expression represents "4 less than the product of 2 and a number e"?
    10·1 answer
  • What are fractions that are greater than 4 1/3 but less than 5 2/3
    7·1 answer
  • Please help!!!!!<br>Solve the equation 5(2y - 1) - 2(3y)= 1<br>​
    8·1 answer
  • What is the measure of ∠x?
    9·1 answer
  • A chef is going to use a mixture two different brands of Italian dressing the first spring and days 5% vinegar the second brain
    13·1 answer
  • Determine the solution for x^2+2x+8
    12·1 answer
  • Find the missing values in the ratio table. Then write the equivalent ratios. Write each value as a fraction or whole number. Wh
    11·1 answer
  • Which of the following lines pass through the origin?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!