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
In-s [12.5K]
2 years ago
5

What is the mDEF? plz help

Mathematics
1 answer:
Paladinen [302]2 years ago
7 0

Answer:

m∠DEF = 148°

Step-by-step explanation:

The total sum of angles inside a triangle is 180°

m∠FDE + m∠EFD + m∠DEF = 180°

We can also see that because two sides are congruent, their angles are also congruent, so we can solve for x

m∠FDE = m∠EFD

2x + 8 = 3x + 4; subtract 2x from both sides

8 = x + 4; subtract 4 from both sides

x = 4; now we can substitute into equations

m∠FDE = m∠EFD;

2(4) + 8 = 3(4) + 4

8 + 8 = 12 + 4; 16=16; therefore = m∠FDE = m∠EFD = 16

To solve for m∠DEF

m∠FDE + m∠EFD + m∠DEF = 180°

16 + 16 + m∠DEF = 180

m∠DEF = 148°

You might be interested in
Need help asap!! Tysmm
Levart [38]

Answer:

1) 9x-4

Step-by-step explanation:

7x+2x= 9x

-8+4= -4

9x-4

8 0
3 years ago
Read 2 more answers
Simplify your answer as much as possible. 3/x-4/7
Natasha2012 [34]

Answer:

That is ur answer. I was unable to type that so I use took a screenshooton my phone .

Step-by-step explanation:

5 0
3 years ago
Find the value of x.
coldgirl [10]

Answer

I guess it my be 8. can you try it ?

Step-by-step explanation:

8 0
2 years ago
E - 867 = 108; E = need help
lina2011 [118]
To solve for E you'll add 867 to 108.

E - 867 = 108
E = 108 + 867
E = 975

Hope this helps :)

7 0
3 years ago
What 3 prime numbers times together to make 231
Masja [62]
231 | \div 3 \\
77 | \div 7 \\
11 \\ \\
231=3 \times 7 \times 11

The numbers are 3, 7, and 11.
7 0
3 years ago
Other questions:
  • Simplify using the vertical method. (3k + 4)(3k^2 – 5k – 3)
    9·1 answer
  • For what values of x will the result of 5x be greater than 1
    7·1 answer
  • Is $1.25 per song a unit rate
    12·2 answers
  • Last Sunday, the average temperature was 8%, percent higher than the average temperature two Sundays ago. The average temperatur
    11·1 answer
  • Solve 16.24 divided by 1000
    9·2 answers
  • A particular automatic sprinkler system has two different types of activation devices for each 3 sprinkler head. One type has a
    15·1 answer
  • How can you express (15 30) as a multiple of a sum of whole numbers with no common factor?
    11·2 answers
  • Show all work. Calculate and find the x-intercepts of the<br> following function:<br> f(x)=x^2+5x-36
    9·1 answer
  • Simplify (5x-5)-1(x+8
    14·1 answer
  • Find the area of the circle and enter your answer below. Leave Pl in the answer (do not multiply by Pl) Area = πm2 15 m​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!