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
emmasim [6.3K]
3 years ago
11

I need help with number 15. Could you also please explain how you got your answers too?

Mathematics
1 answer:
atroni [7]3 years ago
4 0

By definition, an angle bisector divides an angle into two equal parts. Thus, ∠AEB ≅ ∠BEC by definiton.

Because EA is perpendicular to ED, it makes a right angle at E. Thus the measure of ∠AED is 90°.

Using these two pieces of information - the definition of an angle bisector and the definition of perpendicular, we can find the measure of the pieces inside by angle addition.  

Now we take those two definitions and our given angles to find x. Thus,

m∠AEB + m∠BEC + m ∠CED = m∠AED by angle addition

m∠AEB + m∠BEC + m ∠CED = 90  by definition of perpendicular

m∠AEB + m∠AEB + m ∠CED = 90   by defintion of angle bisector for EA.

(4x + 1) + (4x +1) + m ∠CED = 90         because m∠AEB =4x + 1 is given

4x +1 + 4x +1 + 3x = 90                          because m∠CED =3x is given

11x + 2 = 90                                       by collecting like terms

11x = 88                                        by subtracting 2 on both sides

x = 8                                            by dividing both sides by 11.

Now we can substitute to find the angles.

Since m∠AEB is 4x + 1, then m∠AEB = 4(8) + 1 = 32 + 1 = 33°.  Since m∠CED is 3x, then m∠CED is 3(8) = 24 degrees. The remaining angle, ∠BEC, was equal to ∠AEB by definition of angle bisector. It too is 33 degrees.


Therefore, x = 8, m∠AEB = m∠BEC = 33° and m∠CED = 24°

You might be interested in
10.(06.01 LC)
storchak [24]
Need more explanation
8 0
3 years ago
Eight friends share two pizzas equally. How much of a pizza does each friend get?
My name is Ann [436]
2/8.

You take two pizzas and divide them by 8.
3 0
3 years ago
Read 2 more answers
Help please................
Zinaida [17]
The answer is yes she incorrectly graphed using the points (-2,4) instead of the point (4,-2). This is the answer because if you solve the equation given you should get y=-3/5x+2/5 so a and e will be wrong and if you plug one of the points in you will give a untrue statement so its not d so you are left with b and c so you plug in the end request and you get a true statement with b equaling -2 if you plug in 4 in for x
5 0
3 years ago
Help me please!!!! Please
Monica [59]

Answer:

5

Step-by-step explanation:

it's not necessary to round to the nearest tenth just simply half 10

3 0
3 years ago
It is estimated that 4,600 people, correct to the
Marina CMI [18]

Answer:

The minimum would be 4,500, and the maximum would be 4,700.

Step-by-step explanation:

If I am not mistaken, you simply need to add or subtract 100 to find the minimum or maximum, as it stated that 4,600 is an estimate that is valid for a range of 100 (up or down).

8 0
3 years ago
Other questions:
  • Tim's phone service charges $24.39 plus an additional $0.24 for each text message sent per month. If Tim's phone bill was $30.39
    8·1 answer
  • In this task it just says ABC≅_______ so i have to find out what ABC is congruent to. But i am confused on this someone please h
    13·1 answer
  • The sum of two numbers is 47 and the difference is 17 . what are the numbers?
    9·1 answer
  • Which of the following equations represents a quadratic function?
    11·2 answers
  • Estimate to find the answer. 52% of 10
    8·2 answers
  • omar has 5 liters of water he divides the water evenly between 4 buckets. how many milliters does omar pour in each bucket
    9·1 answer
  • How should i set up this graph?
    9·1 answer
  • 0.8 -0.50 3 with solution​
    5·2 answers
  • Y varies directly with x. If y=25 when x=5, find y when x =-4<br><br>y =​
    15·1 answer
  • In 2015, there were roughly 1x10^6 high school football players and 2x10^3 professional football players in the United States.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!