![evafaith](/avatars/46961.jpg)
evafaith
24.07.2019 •
Mathematics
Ned can buy 12 juice boxes for $4.80 at that price, how many juice boxes can he buy for $24
Solved
Show answers
More tips
- A Art and Culture How to Learn to Play Guitar?...
- S Style and Beauty What to Do When Hair Starts Falling Out?...
- H Health and Medicine Novomin: What is it and how to use it?...
- P Philosophy Unbelievable stories of encounters with otherworldly forces...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- H Health and Medicine How to Treat Whooping Cough in Children?...
- H Health and Medicine Simple Ways to Lower Cholesterol in the Blood: Tips and Tricks...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
Answers on questions: Mathematics
- M Mathematics The axis of symmetry of the graph of y = -(x+4)2 -6 is a. x = 6 b. x = 4 c. x = -4 d. x = -6 i m fairly sure it s d, but i m rubbish at maths : (...
- H History How did changes in our history affect and influence the themes and forms of our literature?...
- B Business Acompany that has to develop and establish multiple brands is in multiple businesses. a. true b. false...
- C Computers and Technology What is the best resource to learn python?...
- G Geography Read and analyze the case and answer here the following question: Why does a natural disaster (drought, flood) in an agricultural region almost always result in higher...
Ответ:
Ответ:
Angle Y equals 58.9 degrees (to the nearest tenth)
Step-by-step explanation: The triangle given in the question already has all three sides provided, while none of the angles has been given. We can apply the cosine rule which states that,
c^2 = a^2 + b^2 - 2ab CosC
Where C is the reference angle, we shall replace this with a new label, Y to suit our question. Hence our Cosine Rule can be re-written as ;
y^2 = x^2 + z^2 -2xz CosY
20^2 = 22^2 + 18^2 -(2{22 x 18}CosY)
400 = 484 + 324 - (2{396} CosY)
400 = 808 - (792 CosY)
Subtract 808 from both sides of the equation
-408 = -792CosY
Divide both sides of the equation by -792
-408/-792 = CosY
0.5151 = CosY
By use of calculator or table of values, 0.5151 equals 58.9958
Approximately to the nearest tenth,
Y = 58.9 degrees