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
amm1812
3 years ago
11

Solve for CD using the following image

Mathematics
2 answers:
zalisa [80]3 years ago
4 0

Answer:

CD = CB - DB \\ CD = 12 - (x - 9) \\ { \tt{but \: CD = 2x - 9}} : \\ 2x - 9 = 21 - x \\ 3x = 30 \\ x = 10 \\  \\ { \bf{CD = 12 - (10 - 9)}} \\ CD = 11

AleksandrR [38]3 years ago
3 0

<em>Here</em><em>,</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>BC</em><em> </em><em>=</em><em> </em><em>12</em>

<em> </em><em>CD</em><em>+</em><em>BD</em><em>=</em><em>12</em>

<em>2x</em><em>-</em><em>9</em><em>+</em><em>x</em><em>-</em><em>9</em><em> </em><em>=</em><em>12</em>

<em>3x</em><em>-</em><em>18</em><em> </em><em>12</em>

<em>3x</em><em> </em><em>=</em><em>12</em><em>+</em><em>18</em>

<em>x</em><em> </em><em>=</em><em>30</em><em>/</em><em>3</em>

<em>x</em><em> </em><em>=</em><em>10</em>

<em>Now</em><em>,</em>

<em> </em><em> </em><em> </em><em> </em><em>CD</em><em> </em><em>=</em><em> </em><em>2x</em><em>-</em><em>9</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>2</em><em>×</em><em>10</em><em>-</em><em>9</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>20</em><em>-</em><em>9</em>

= 11

Therefore,CD = 11

Hope this solution may help you!!☺

You might be interested in
Help plzz i will give you brianliest Which best describes the graph of the function f(x) = 3(1.8)^x A) The graph passes through
DanielleElmas [232]

Answer:

Step-by-step explanation:

Start with why C isn't the answer.

y = 1.8^0 . The power is zero. Anything to the zero power (anything except 0 to the 0 power) is 1. So 1.8^0 is 1 not something else. C assumes that somehow 0,1.8 turns into 1.8. It does not. The second part is also wrong but you don't need it. However here it is.

x = 0        y = 3

x = 1         y = 3 * 1.8 = 5.4

x = 2        y = 3 * 1.8^2 = 3*3.24 = 9.72

You should be able to see that if you multiply 5.4 by 3, you don't get 9.72

C just does not work.

=======

The actual answer is A. That's exactly what the graph does. If you multiply 5.4 * 1.8 you should get 9.72. Just for completeness, I've included the graph.

6 0
3 years ago
What is the equation of a line that goes through (9,-1) and is perpendicular to line 2y-3x=8
jonny [76]
Choicexs?














?????????????????????????
7 0
3 years ago
3X-1=4 THEN 2X= ...?
strojnjashka [21]
3x=4+13x=5x=5/32x=2* 5/32x=10/3
8 0
3 years ago
You want to buy three books that are on sale at 20% off. The original prices of the books are $2.50, $4.95, and $6.00. How much
Anon25 [30]

First add the prices of the original books.

2.5+4.95+6=11.45

Find 20% of 11.45

=2.29

Therefore I saved $2.29

8 0
3 years ago
Shaquille bought 2 umbrellas and 3 hats and spent between $30 and $50. Each umbrella costs the same amount. EAch hat costs the s
DiKsa [7]

Answer:

The least she could of spent would be $41

Step-by-step explanation:


5 0
3 years ago
Other questions:
  • A cylinder with a diameter of 20 units and a height of 18 units what is the volume
    7·1 answer
  • How can exponential and logarithmic functions be combined
    12·1 answer
  • What do you get when you cross the Atlantic with the titanic
    14·1 answer
  • a bag contains 8 balls. 5 are black 3 are white. a ball is taken out of the bag at random and not replaced. another ball is take
    8·1 answer
  • Show work plz for I can understand
    12·1 answer
  • Plz help me with this
    8·1 answer
  • SOMEONE DO 7,8, AND 9. ILL GIVE BRAINLIEST
    8·2 answers
  • Help me pls! (Dot plots) Answer F G H. (Median and range)
    9·1 answer
  • Notice that the original recipe calls for 1/4 cup of water. If you put in 3/8 cup of water, by how much have you multiplied the
    15·2 answers
  • Find the median of the set of data <br> 8.4, 4.9, 1.9, 1.3, 8.7, 9.4, 4.9, 5.5
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!