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
ZanzabumX [31]
3 years ago
11

Find c to the nearest 10th. (laws of sines)

Mathematics
1 answer:
elena55 [62]3 years ago
8 0

Answer:

Option D

Step-by-step explanation:

By applying cosine rule in the given triangle,

a² = b² + c² - 2b.c.cos(m∠A)

By substituting values in the formula,

9² = 10² + c² - 2(10)(c)cos(15)°

81 = 100 + c² - 19.32c

c² - 19.31c + 19 = 0

By quadratic formula,

c = \frac{19.31\pm\sqrt{(19.31)^{2}-4(1)(19)}}{2(1)}

  = \frac{19.31\pm17.23}{2}

  = 1.08, 18.27

  ≈ 1.1, 18.3

Therefore, Option D will be the answer.

You might be interested in
Which expressionis equal to (-7x+5.1y)-(-9x+5.3y)
Furkat [3]

Answer:

The simplified expression for the given expression will be:

c. 2x-0.2y

Step-by-step explanation:

Given expression:

(-7x+5.1y)-(-9x+5.3y)

To simplify the expression.

Solution:

In order to simplify the expression, we will first remove the parenthesis by reversing the signs of the terms inside the parenthesis which lies after a negative sign out side the parenthesis.

<em>This is because negative multiplies to a negative to give a positive and negative multiplies to a positive to give a negative.</em>

So, we have:

⇒ -7x+5.1y+9x-5.3y

Combining like terms

⇒ -7x+9x+5.1y-5.3y

<em>The like terms can be evaluated as</em>

-7x+9x=2x

5.1y-5.3y=-0.2y

Thus, the simplified expression will be:

⇒  2x-0.2y

7 0
3 years ago
O.012 in words from
Scrat [10]

Answer:

word form of 0.012 is

zero point zero one two

Step-by-step explanation:

.-point

0-zero

1-one

2-two

3-three

4-four

5-five

6-six

7-seven

8-eight

9-nine

10-ten

4 0
3 years ago
Help!!!!! Thank you!!!!
mart [117]

Answer:

97

Step-by-step explanation:

5 * 85 - 4* 82 = 97

8 0
3 years ago
Read 2 more answers
Last question and i can go!!! this is due today and im giving breainlies t !
olga55 [171]

Answer:

A

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
You have cards with the letters A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P. Event U is choosing the cards A, B, C
Thepotemich [5.8K]

Answer:

If you are asking how many events use P: 1 event is using the letter P (event W)

Step-by-step explanation:

Why event U cannot be using P: This event is only using the letters A, B, C, and D.

Why event V cannot be using P: This event is only using vowels (A, E, I, O, U)

5 0
3 years ago
Other questions:
  • Fill in the boxes. 300 000 cm =____ m=____km
    13·1 answer
  • Whitney rented an apartment for $11,600 for the first year she lived in the apartment. Each year after that the price for the ap
    14·1 answer
  • Deals with Area of Triangle, thankyou so very much for your help!
    7·1 answer
  • Help two helpless triangles?
    9·2 answers
  • Which of the following are quadratic functions A. Y =5x-3/2+x^2 B. Y=x^2+5x-2 C. Y=-x+2 D. Y=x-1/x
    12·2 answers
  • Solve the formula c = pi d for d
    15·2 answers
  • HAPPY THANKSGIVING!!<br><br> solve 2y + 1 ≤ 7
    14·2 answers
  • Divide using synthetic division (x^2 +9)÷(x-3) =​
    8·1 answer
  • Solve the following triangle angles
    6·1 answer
  • PLEASE HELP, TY! WILL MARK BRAINLIEST!!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!