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
Roman55 [17]
3 years ago
10

If EF bisects angle CEB, angle CEF=7x + 21 and angle FEB = 10x - 3, find the measure of DEB.

Mathematics
1 answer:
morpeh [17]3 years ago
8 0

Answer: DEb = 26°

Step-by-step explanation:

<u>Given information</u>

CEF = 7x + 21

FEB = 10x - 3

<u>Given expression deducted from the definition of the bisector</u>

FEB = CEF

<u>Substitute values into the expression</u>

10x - 3 = 7x + 21

<u>Subtract 7x on both sides</u>

10x - 3 - 7x = 7x + 21 - 7x

3x - 3 = 21

<u>Add 3 on both sides</u>

3x - 3 + 3 = 21 + 3

3x = 24

<u>Divide 3 on both sides</u>

3x / 3 = 24 / 3

x = 8

<u>Find the sum of the angle of CEF and FEB</u>

 7x + 21 + 10x - 3

=7 (8) + 21 + 10 (8) - 3

=56 + 21 + 80 - 3

=77 + 80 - 3

=157 - 3

=154

<u>Subtract 154 from the straight angle</u>

DEB = 180 - 154

\boxed{DEB = 26}

Hope this helps!! :)

Please let me know if you have any questions

You might be interested in
three trigonometric functions for a given angle are shown below csc theta = 13/12, sec theta = -13/5, cot theta = -5/12 what are
goldenfox [79]
We have that
csc ∅=13/12
sec ∅=-13/5
cot ∅=-5/12

we know that
csc ∅=1/sin ∅
sin ∅=1/ csc ∅------> sin ∅=12/13

sec ∅=-13/5
sec ∅=1/cos ∅
cos ∅=1/sec ∅------> cos ∅=-5/13

sin ∅ is positive and cos ∅ is negative
so
∅ belong to the II quadrant

therefore
<span>the coordinates of point (x,y) on the terminal ray of angle theta are
</span>x=-5
y=12

the answer is
point (-5,12)

see the attached figure

6 0
3 years ago
Read 2 more answers
Which one is it i don’t know
matrenka [14]

Answer:

the anwer is

3f - 9g + 7

3 0
3 years ago
I will name you the brainliest ! Which point represents -(-10) on the number line?
Anna007 [38]

Answer:

e

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I need help with these please! Answers please!?
timama [110]

Answer:

navada 110,567 mi²  

oklahoma 69,899 mi²

Step-by-step explanation:

7 0
3 years ago
7th grade math help me please :(
coldgirl [10]

Answer:

<h2>92 remainder 280</h2>

Step-by-step explanation:

\frac{65600}{710}=92\:remainder\:280\\\\\frac{65600}{710}=92\frac{280}{710}

4 0
3 years ago
Other questions:
  • Which operation will solve the equation?
    7·2 answers
  • Similar Triangles, really need help on this one tried to do it but I don't understand it please help.
    9·1 answer
  • Can someone solve these puzzles
    5·1 answer
  • Mr. Jones spends $156 to attend a college football game. Twenty percent of his cost was for a pass for parking. He spend the rem
    14·1 answer
  • Anybody happen to know this? Thanks
    5·1 answer
  • Which test point holds true for y − 2x ≤ 1?
    12·1 answer
  • Which of the following statements about an ellipse is NOT true?
    6·1 answer
  • In 1/a-b - 1/b-a
    10·1 answer
  • A rectangular prism is 3 inches long, 5 inches wide, and has a height of 6 inches. What is its surface area?
    10·1 answer
  • Mhanifa can you please help me on this question? I will mark brainliest!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!