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
Black_prince [1.1K]
3 years ago
14

Find the value of x. Please help!

Mathematics
1 answer:
Mars2501 [29]3 years ago
8 0

Answer:

x = 3

Step-by-step explanation:

Using the triangle similarity theorem

x/x+3 = x+3/12

Cross multiply

12x = (x+3)(x+3)

12x = x²+3x+3x+9

12x =  x²+6x+9

x²+6x+9-12x = 0

x²-6x+9 = 0

Factorize

x²-3x-3x+9 = 0

x(x-3)-3(x-3) = 0

x - 3 = 0

x = 3 twice

Hence the value of x is 3

You might be interested in
What is the value of the rational expression 6-x\x+5 when x=2
MrMuchimi

6-2/2+5= 4/7=.57142857142 but usually you just keep it as a fraction so 4/7 is the answer

6 0
3 years ago
Read 2 more answers
Find the value of x. Using trig
scoundrel [369]

Hi there! We can find the value of x by using this equation.

\large \boxed{tanx =  \frac{19}{23} }

If you remember, tanx = opposite/adjacent. We focus on the angle x currently.

Now that you might wanna ask if there is a value of x that makes 19/23. The answer is yes but in decimal.

\large{arctan( \frac{19}{23} )} = x

You might wanna put arctan(19/23) in a calculator since it's not really possible to get the square root like value by yourself.

arctan(19/23) is 0.69

Then we round up and get 0.7

Hence, the value of x ≈ 0.7

Answer

  • x ≈ 0.7 (rounded)

Questions can be asked through comment.

Hope it helps, and Happy Learning! :)

4 0
3 years ago
Pls help in this<br> 7.6x5.2
Nimfa-mama [501]

Answer:

39.52

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
If 20 articles cost ? 90, then the cost of 9 articles is ?
lianna [129]

Answer:

40.50

Step-by-step explanation:

90/20 = 4.50

4.50 x 9 = 40.50

6 0
3 years ago
Marta bought a paperweight in the shape of a cone. The radius was 10 centimeters and the height was 9 centimeters. Find the volu
mixas84 [53]

Answer:

V≈942.48cm³

Step-by-step explanation:

hope this helps

4 0
3 years ago
Read 2 more answers
Other questions:
  • Simplify expression and show all work:<br> 48m^7/20m^4
    5·1 answer
  • How much interest is earned on an investment of $12,000 at 2.9% compounded daily for eight years
    14·1 answer
  • Joe bought 20 ounces of nuts at the store. How much is this in pounds? Write your answer as a whole number or a mixed number in
    6·2 answers
  • How do you do this if you don’t know please don’t give that answer to me because this is a grade
    14·1 answer
  • Find the area of a circle with diameter 14 yr
    11·1 answer
  • Which of these lines have a scale factor of 2?
    8·2 answers
  • Solve the following:<br><br>a) 3x+4/2 = 9.5<br><br>b) 7+2x/3= 5​​
    15·1 answer
  • What is the measure of
    5·1 answer
  • HELP ME PLZZ, ASAP!!<br><br> In your own words explain what Complementary means.
    11·1 answer
  • Which inequality has the solution n &lt; 5?<br>i really need this help
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!