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
sveta [45]
3 years ago
15

Can u help with it plz I really need help ​

Mathematics
1 answer:
boyakko [2]3 years ago
7 0

Answer:

let angle e be x

x+4x+10=180°[by linear pair]

5x+10=180°

5x=180-10

5x=170

x=170/5

x=34

angle E=34°

angle E+angle C+angle D=180°[by angle sum property]

34°+70°+2x=180°

104°+2x=180°

2x=180°-104

2x=76°

angle d=76°

You might be interested in
How to find the area of a polygon
Lelechka [254]

Answer:

Calculating the area of a polygon can be as simple as finding the area of a regular triangle or as complicated as finding the area of an irregular eleven-sided shape. If you want to know how to find the area of a variety of polygons, just follow these steps.

Step-by-step explanation:

1.) Write down the formula for finding the area of a regular polygon. To find the area of a regular polygon, all you have to do is follow this simple formula: area = 1/2 x perimeter x apothem.[1] Here is what it means:

Perimeter = the sum of the lengths of all the sides

Apothem = a segment that joins the polygon's center to the midpoint of any side that is perpendicular to that side

2.)  Find the apothem of the polygon. If you're using the apothem method, then the apothem will be provided for you. Let's say you're working with a hexagon that has an apothem with a length of 10√3.

3.)  Find the perimeter of the polygon. If the perimeter is provided for you, then you're nearly done, but it's likely that you have a bit more work to do. If the apothem is provided for you and you know that you're working with a regular polygon, then you can use it to find the perimeter. Here's how you do it:

Think of the apothem as being the "x√3" side of a 30-60-90 triangle. You can think of it this way because the hexagon is made up of six equilateral triangles. The apothem cuts one of them in half, creating a triangle with 30-60-90 degree angles.

You know that the side across from the 60 degree angle has length = x√3, the side across from the 30 degree angle has length = x, and the side across from the 90 degree angle has length = 2x. If 10√3 represents "x√3," then you can see that x = 10.

You know that x = half the length of the bottom side of the triangle. Double it to get the full length. The bottom side of the triangle is 20 units long. There are six of these sides to the hexagon, so multiply 20 x 6 to get 120, the perimeter of the hexagon.

4.) Plug the apothem and the perimeter into the formula. If you're using the formula area = 1/2 x perimeter x apothem, then you can plug in 120 for the perimeter and 10√3 for the apothem. Here is what it will look like:

area = 1/2 x 120 x 10√3

area = 60 x 10√3

area = 600√3

5.)  Simplify your answer. You may need to state your answer in decimal instead of square root form. Just use your calculator to find the closest value for √3 and multiply it by 600. √3 x 600 = 1,039.2. This is your final answer.

(Source: https://www.wikihow.com/Calculate-the-Area-of-a-Polygon)

5 0
3 years ago
Read 2 more answers
What is the value of the expression w – 4 when w = –17?
JulsSmile [24]
=(-17) - 4
=(-17) + (-4)
=(-21)

3 0
3 years ago
Read 2 more answers
Don't know need help [pls
NeX [460]

Answer:

56

......................................................

8 0
2 years ago
How long does each phase of the moon (exactly) take long to complete?
hammer [34]
The moon takes.exactly one month. did that help?
8 0
3 years ago
What multiple of 7 is also a factor of 7
enyata [817]
<span>The answer is 7. Seven is a prime number, which means that its multiples are 1 and itself (7): 7 = 1 * 7. To find out which one is a factor of 7, we should divide each of them by 7. 1/7 will be a decimal number and 7/7 = 1, which is a whole number. Thus, 7 will be a multiple of 7 and also a factor of 7.Hope this helps. Let me know if you need additional help!</span>
7 0
3 years ago
Other questions:
  • If ∠G ≅ ∠H, then ∠H ≅ ∠G. name the property
    9·1 answer
  • A patrolman spends 25% every day completing paperwork. The patrolman’s shift each day is 8 hours. How much of his time does he s
    11·1 answer
  • Some help please? <br><br> What is the coefficient of the term of degree 1 in the polynomial
    15·2 answers
  • PLZZZZ HELPPPPPP NOWWWWWW PLZ PLZ PLZ
    5·1 answer
  • The question is in the picture down below!
    13·1 answer
  • I need help with this question
    11·1 answer
  • I need help ASAP! Math
    15·2 answers
  • Find the value of each factional expression <br><br> 4! <br><br> A 3 <br> B 6<br> C 12<br> D 24
    12·1 answer
  • 4
    8·1 answer
  • A 14.5 kg rocket is launched by an engine that exerts an average force of 8.00 N. What is
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!