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
andrew11 [14]
2 years ago
13

My last question, please help?

Mathematics
1 answer:
goldfiish [28.3K]2 years ago
8 0

Answer:

x = 10

Step-by-step explanation:

We can use the Angle Bisector of a triangle and proportions to solve this problem.  Put the smaller triangle over the larger triangle.

AB       x+4

------ = ----------

AC         2x+1


8       x+4

------ = ----------

12         2x+1

Using cross products

8(2x+1) = 12(x+4)

Distribute

16x+8 = 12x+48

Subtract 12x from each side

16x-12x +8 = 12x-12x+48

4x +8 = 48

Subtract 8 from each side

4x+8-8 = 48-8

4x = 40

Divide by 4

4x/4 =40/4

x = 10

You might be interested in
Let f(x)= x^2-4x-c. Find a nonzero value of c such that f(c)=c.​
Dimas [21]

Answer:

The nonzero value of c will be:

  • c = 6

Step-by-step explanation:

Given the function

f\left(x\right)=\:x^2-4x-c

f\left(c\right)=\:c^2-4c-c

as

f(c) = c

so

c=\:c^2-4c-c

switching the sides

c^2-4c-c=c

subtract c from both sides

c^2-4c-c-c=c-c

c^2-6c=0

c\left(c-6\right)=0

Using the zero factor principle

\:If}\:ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)

c=0\quad \mathrm{or}\quad \:c-6=0

so, the solutions to the quadratic equations are:

c=0,\:c=6

Therefore, a nonzero value of c will be:

  • c = 6
5 0
3 years ago
What is slope (what does it mean) for anyone who answers they will get a brainliest
kirza4 [7]
slope basically directs how steep a line is. it’s formula is rise/run of y2-y1/x2-x1
5 0
3 years ago
Read 2 more answers
CAN SO ONE PLS HELP ME whats (2-3x4)9+22
Nuetrik [128]

Answer:

The answer is =  112

Step-by-step explanation:

3x4 = 12

12 - 2 = 10

10 x 9 = 90 .,. when there is a ) next to a number you multiply

90 + 22 = 112

4 0
3 years ago
What is the value of 4x−8(2−x) , when x=−14 ?
hoa [83]

Answer:

-184

Step-by-step explanation:

First we plug in -14 into the x's.

4 (-14) - 8(2 - (- 14))

Then we can distribute the 8.

4 (-14) - 16 - 112

Then solve from here.

-56 - 16 - 112

= -184

5 0
3 years ago
5x - x = -12 what is x???
aleksley [76]
X would equal -3. 5x-3 would equal -15, and 2 negatives would equal a positive. So, -15+3 would equal -12.
3 0
3 years ago
Read 2 more answers
Other questions:
  • <img src="https://tex.z-dn.net/?f=2x%20-%203%20%3D%2025" id="TexFormula1" title="2x - 3 = 25" alt="2x - 3 = 25" align="absmiddle
    12·2 answers
  • What is 10% of 25? 12 is what percent of 40
    12·2 answers
  • What is the value of x in the equation? 5 1 10 x − 6 4 5 = 3 1 4 A) 1 1 9 B) 1 1 5 C) 1 3 20 D) 1 33 34
    5·1 answer
  • PPPLLEEWASSSSEEE HEEELP MEE
    15·1 answer
  • Find three consecutive even integers with a sum of 168
    7·2 answers
  • Please help me out! TY :D
    6·2 answers
  • Which calculation will ALWAYS give a result greater than 11?
    10·1 answer
  • 9-31 3 | | what is the answer<br>​
    8·1 answer
  • -14 -8 = -2 (-3x + 7) <br> Please answer
    15·1 answer
  • NO LINKS!!!!!! NO RANDOM LETTERS FOR POINTS!!!!!!!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!