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
vagabundo [1.1K]
3 years ago
7

Triangle ABC is equilateral. Find the length of CD .

Mathematics
2 answers:
lilavasa [31]3 years ago
7 0

Answer:

CD = 5.20 units to the nearest hundredth.

Step-by-step explanation:

Triangle BCD is a right angled triangle with m < C = 60 degrees (because triangle ABC is equilateral).

tan 60 = 9/CD

CD = 9 / tan 60

= 5.196.

goldenfox [79]3 years ago
4 0

Answer:

The answer to your question is: CD = 5.2 units

Step-by-step explanation:

ΔABC is equilateral, then its angles are 60°, 90° and 30°

∠C = 60°

sin 60° = 6 / hypotenuse

hypotenuse = BC = 9 / sin 60

BC = 6.9

tan 60 = 9/ CD

CD = 9 / tan 60

CD = 5.2 u

You might be interested in
Plz help fast will give brainiest
kati45 [8]

Answer:

X has to be 6 or anything bigger than that.

Step-by-step explanation:

18-12=6

Hope this helped

:)

5 0
3 years ago
What’s the Variace of 7, 5, 11, 1, 11
lara31 [8.8K]
The mean is 35/5=7

v=((7-7)^2+(5-7)^2+(11-7)^2+(1-7)^2+(11-7)^2)/5

v=(0+4+16+36+16)/5

v=14.4
8 0
3 years ago
Evaluate-16 to the power of -3/4
igomit [66]

Answer: −1/8

Step-by-step explanation: maybe

3 0
2 years ago
Find the radius of each circle. use 3.14for the value of Pie. round your answer to
muminat

9514 1404 393

Answer:

  8.6 km

Step-by-step explanation:

The circumference of a circle is given in terms of its radius as ...

  C = 2πr

Then the radius can be found from the circumference using ...

  r = C/(2π)

Filling in the given values, we find the radius to be ...

  r = (54 km)/(2·2.14) = (54 km)/6.28 ≈ 8.59873 km

The radius is about 8.6 km.

7 0
3 years ago
Question 5 (10 points)
Kamila [148]
You have to subtract 4.35 from 15.60 to see for all the children
3x+4.35 = 15.60
5 0
2 years ago
Other questions:
  • Evelina took 50 people fishing each day last week. The table shows the number of fish the group caught each day.
    11·1 answer
  • Idc about giving away my points...How about 20+ Points for explanation &amp; Correct answer
    5·1 answer
  • What is the sign of the quotient when a negative number is divided by another negative number
    8·2 answers
  • Can someone please help me ASAP?
    7·1 answer
  • The sanitation department calculated that last year each city resident produced approximately 1.643 × 103 pounds of garbage. The
    11·2 answers
  • If 6 is multiplied by the sum of a number and 5, the result is 30. Which equation could be used to find the value of the number?
    13·1 answer
  • Andrea paid $60.75 for 9 sandwiches. Each sandwich costs the same amount.
    5·1 answer
  • Ggfdgfhkjljhvgtygjhcddfffdddddhh
    14·2 answers
  • 4. Use the distributive property to solve the equation below.<br> 3(n +5)= 33
    13·1 answer
  • What is the total cost for a $625 laptop if the sales tax in your state is 4.6%?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!