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
adoni [48]
3 years ago
9

How long is DE? Any help will be appreciated thank you

Mathematics
1 answer:
lilavasa [31]3 years ago
3 0

Answer: 4

Step-by-step explanation:

<u>solve for the missing angle</u>

the total degrees a triangle can have is 180 so

180-90-60=30

use <u>law of sines</u> to solve for x

\frac{x}{sin30} =\frac{4\sqrt{3} }{sin60}

cross multiply

sin60*x=4\sqrt{3} sin30

divide by sin60

x=\frac{4\sqrt{3}sin30 }{sin60}

type into calculator with (<em>ALPHA Y= </em>for a fraction on TI-84) MAKE SURE IT IS IN DEGREES

You might be interested in
What is the sixth term of (a - y)7?<br><br> 21a3y4<br><br> -21a3y4<br><br> 21a2y5<br><br> -21a2y5
Katena32 [7]
Im guessing the fourth answer
3 0
3 years ago
What is the measure of b if a=20 and c=29. using the pythagorean theorem ​
kicyunya [14]

Since a^2+b^2=c^2 becomes 20^2+b^2=29^2, we solve for b:

400+b^2=841

b^2=441

b=21

So the length of b is 21 units.

Hope this helped!

5 0
3 years ago
Read 2 more answers
A box is in the shape of a right rectangular prism. The base of the box has an area of 15 square inches. The height of the box i
nata0808 [166]
The answer is 180cubic2 (square)
7 0
3 years ago
The distance around the lake is 0.75 mile.derek ran 0.8 of the distance on monday . how far did he run? the answer is 0.75 * 0.8
Elanso [62]
0.75*0.8= \frac{75}{100} * \frac{8}{10} = \frac{75*8}{100*10} = \frac{600}{1000} = \frac{6}{10}=0.6



5 0
3 years ago
Read 2 more answers
David charges $17 plus $7.00 per hour to mow lawns. Ari charges $11 plus $7.75 per hour to mow lawns. In what situations is Ari'
iren2701 [21]

Answer:

Ari's is less than Davids

Ari=18.75

David=24.00

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • If u +t=5 and u – t = 2, what is the value of (u – t)(u2 – ť)?<br> ?
    6·1 answer
  • Find the missing measurement. Round your answer to the nearest tenth. It doesn't say what shape it is (just assume I guess). If
    6·1 answer
  • This week laptops are 25% off.if a laptop cost $360 what it's sell price<br>​
    14·1 answer
  • an apple pie was cut into 4 equal slices one slice was quickly eaten what fraction of the pie was left
    10·1 answer
  • About to submit a topic test, wish me luck!!!
    10·2 answers
  • Plz help me no links or fake I will report
    11·1 answer
  • Gentile, Lynch, Linder, and Walsh (2004) surveyed over 600 8 th- and 9th-grade students asking about their gaming habits and oth
    11·1 answer
  • Bob earns $1,825 per month as a clerk at Elm City Sporting Goods. How much does he earn in a year? Explain how you got your answ
    5·1 answer
  • Milan wants to wallpaper the back wall of his bedroom. The wall is in the shape of a rectangle. Its length is 16 and its width i
    10·2 answers
  • Evaluate 1/4 c + 3d when c = 6 and d = 7
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!