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
AlexFokin [52]
3 years ago
12

n ΔABC, if the length of sides a, b, and c are 3.5 centimeters, 5.5 centimeters, and 6 centimeters respectively, what is m∠C to

two decimal places?
Mathematics
1 answer:
borishaifa [10]3 years ago
7 0
We are given with three sides with measurements such as below:
a = 3.5 cm 
b = 5.5 cm
c = 6 cm
We are asked to solve for m∠C. To solve this we need to apply Law of Cosines such as below:
cos C = a²+b² - c² /2ab
cos C = 3.5² + 5.5² -6² / (2*3.5*5.5)
cos C = 0.16883
C = 80.28°
You might be interested in
A rectangular bedroom is 4 ft longer than it is wide. Its area is 140 ft2. What is the width of the room? ft
steposvetlana [31]

Answer: width = 10 ft

Step-by-step explanation:

Area = length × width

Let l be length and w be width

l = w + 4 ........equation (1)

From above formula

140 = l × w. ........equation (2)

Substitute equation (1) into equation (2)

140 = (w+4) × w

w^2 + 4w= 140

w^2 + 4w - 140= 0

By factorization method

(w+14)(w-10)= 0

w=-14 or w= 10

So now width is 10 ft

From equation(1)

l=w+4

l= 10+4

l= 14 ft

Width = 10 ft and length = 14 ft

3 0
3 years ago
Read 2 more answers
An advertising campaign is canceled before launch with probability 0.10, in which case the marketing company is fired with proba
Feliz [49]

Answer:

0.2231 (22.31%)

Step-by-step explanation:

defining the event F = the marketing company is fired, then the probability of being fired is:

P(F)= probability that the advertising campaign is cancelled before lunch * probability that marking department is fired given that the advertising campaign was cancelled before lunch + probability that the advertising campaign is launched but cancelled early  * probability that marking department is fired given that the advertising campaign is launched but cancelled early        ....   (for all the 4 posible scenarios where the marketing department is fired)

thus

P(F) =0.10 * 0.74 + 0.18 * 0.43 + 0.43 * 0.16 + 0.29*0.01 = 0.2231 (22.31%)

then the probability that the marketing department is fired is  0.2231 (22.31%)

7 0
2 years ago
A drone travels 180 kilometers in the same time a bird travels 120 kilometers. If the drone's speed is 20 km/hr faster than the
allochka39001 [22]

Answer:

drone is 60km/h bird 40km/h

Step-by-step explanation:

3 0
2 years ago
Eric jogged 31/4 miles on monday 5 5/8 miles on tuesday and 8 miles on wensday .suppose he continues the pattern for the remaind
Troyanec [42]
The is increasing by 2 3/8
So the answer is 12 3/4 miles on Friday

Hope this helps :)
3 0
3 years ago
20x+32y=0 <br> -50x-80y=0
german

Answer:

dont know what you need

Step-by-step explanation:

explain what you need

4 0
2 years ago
Other questions:
  • Graph the function.
    14·2 answers
  • Please help me do number 3 and number 4
    12·1 answer
  • The bike shop charges $10 for flat tire repair and $40 for a full tuneup. The total receipts for services was $3000. 10 tuneup’s
    9·1 answer
  • Which graph represents the solution Y equals -x+2 and Y= 3X-1?
    8·1 answer
  • If 3y = 15 and 15 = 5x, then 3y = 5x. What algebraic equality property justifies the above statement?
    14·1 answer
  • The shadow of a 5-foot tall post is 10 feet long. At the same time, a tree casts a shadow that is 24 feet long. What is the heig
    15·1 answer
  • What is the distance between the points (−7, 7) and (−7, 8) ? 1 unit 7 units 8 units 15 units Please Help I Will Mark Brainliest
    11·2 answers
  • In the similar triangles below, what is the measure of ∠F
    15·2 answers
  • The ratio of the length of a rectangle to
    8·2 answers
  • Find the mean of the following numbers:<br> 12<br> 1<br> 10<br> 9<br> 3<br> 4<br> 9 <br> 7<br> 9
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!