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
agasfer [191]
3 years ago
10

50 POINTS ANSWER ASAP what is number 8

Mathematics
1 answer:
USPshnik [31]3 years ago
4 0
The key to this problem is recognizing that the line DF must bisect the angle BDC. This is because CD must coincide with diagonal BD when folded along line DF.

The angle BDC is clearly 45 degrees since the diagonal bisects the right angle.
Therefore angle x = 45/2 (Attached diagram).

You can then find CF (labeled y) using tangent function.
tan (\frac{45}{2}) = \frac{y}{1}
From half -angle formula
y = tan (\frac{45}{2}) = \frac{-1 \pm \sqrt{1+tan^2 (45)}}{tan (45)} = -1 \pm \sqrt{2}

Eliminating the negative case since y>0.
y = -1 + \sqrt{2}
Therefore
k = 2
m = 1

Final Answer:
k+m = 3

You might be interested in
Simplify 5x2(5x2− 3x − 1).
BaLLatris [955]
The answer to your problem is........... 60..... i think :)
3 0
3 years ago
Read 2 more answers
Kailynn made 18 out of her last 70 free throw attempts. If she attempts 70 free throws this season, predict how many she will mi
zlopas [31]
Around 50 free throws she will miss
8 0
2 years ago
Please solve for x will mark brainliest answer
inna [77]

Answer:

x ≥ - 8

Step-by-step explanation:

Given

\frac{x}{2} ≥ - 4

Multiply both sides by 2 to eliminate the fraction

x ≥ - 8

7 0
3 years ago
Read 2 more answers
Can anybody give real answers please? Thanks.
Kazeer [188]
I believe it is 17.0, I hope this helps some
8 0
3 years ago
If 5 (3x - 7) = 20 what is 6x - 8​
garri49 [273]
You would have to solve for x the plug in the answer for c into the next equation to find your answer
6 0
3 years ago
Other questions:
  • Micah is buying items for a birthday party. If he wants to have the same amount each item, what is the least number of packages
    14·2 answers
  • Work out the area of this circle take (pi) to be 3.142 and give your answers to 2 decimal places
    6·1 answer
  • A rose garden can be planted for $4000. The marginal cost of growing a rose is estimated to $0.30,
    7·1 answer
  • Solve by using substitution: y = 2x - 5 and y = 5x + 7 *
    9·1 answer
  • Answer, please. I need help.
    6·1 answer
  • For the scientific notation, write the correct standard form: 3.2 x 10-2
    5·1 answer
  • (-15)(-4) help meeee
    10·2 answers
  • Last question of the day hopefully : )
    9·2 answers
  • Help please! The picture is inserted alrdy
    8·1 answer
  • Starting at the point (-3,2) go left 9 and down 8. What ordered pair gives the location of this new point
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!