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
8090 [49]
2 years ago
14

Someone please help! I have spent lots of time on this and I’m still confused

Mathematics
1 answer:
vfiekz [6]2 years ago
3 0

Answer:

its the 3rd choice.

Step-by-step explanation:

Firstly, we find angle BDC (180-90-30=60)

Now that we found it we can use the sine rule to find DB (which i put as an x), which is sin60/14=sin30/x, by cross multiplication, we find that its equal to a decimal number, i will use its root version to this easier, its equal to 14sqrt3/3 inches.

And now we use the pythagorean theorem to find DC, we find that it is equal to 28sqrt3/3

Now, we find angle BAC (180-90-(30+15)=45)

Again, we use the sine rule to find AB (whom i will refer to as x and from whom we will subtract DB to find the length of AD), so we cross multiply in sin45/14=sin(30+15)/x, it is equal to 14.

So since AB-DC=AD

14-(14sqrt3/3)= 5.917096231 (and we ound that to a 5.9)

You might be interested in
Plz answer for 20 pts
KATRIN_1 [288]

Answer to Problem 1: 5√3

Answer to Problem 2: 21√5

5 0
3 years ago
Read 2 more answers
The triangle and square shown have the same perimeter. what expression represents of the triangle in terms of x? Give your awnse
Rashid [163]

Answer:

brainly.com/question/17506481

Step-by-step explanation:

5 0
3 years ago
I don’t understand the concept of this problem
maxonik [38]

Answer:

This uses the method of elimination/addition.

Step-by-step explanation:

1 (9x + 7y = 15)

-7 (5x + y = -9) <— let’s eliminate y for both equations

9x + 7y = 15

+ -35x - 7y = 63 <— add both of the equations

—————————————————

- 26x + 0y = 6

(Please let me know if the answer is correct or not)

5 0
3 years ago
Find three consecutive integers whose sum is 21
stira [4]

Answer:

6 + 7 + 8 = 21

Step-by-step explanation:

6, 7, and 8 are consecutive integers.

6 + 7 is 13. 13 + 8 = 21. So, 6 + 7 + 8 are consecutive integers that equal 21.

5 0
3 years ago
Read 2 more answers
Solve the following equation by completing the square: 2x^2 – 2x – 4 = 0
Rus_ich [418]

Answer:

the answer is B

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Select the correct answer from each drop-down menu.
    13·2 answers
  • System of equations when 45 animals with 7more cats than dogs
    8·1 answer
  • Which Expression is Equal to 7/√5
    12·1 answer
  • Grey ran 2.4 times as many miles as Emory. If Emory ran 2.08 miles, how many miles did grey run?
    8·2 answers
  • Solve the equation 4+2|3x+4|=-4
    7·1 answer
  • The price of a pair of jeans is $30. The original price of the jeans was $45. What was the percent discount?​
    11·1 answer
  • What is this can someone help
    12·1 answer
  • Help pls i’ll give brainliest
    8·1 answer
  • 1 2 3 4 5
    10·1 answer
  • What is 0.000285 expressed in scientific notation
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!