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
kumpel [21]
4 years ago
12

Once again co sines . Please help me and include explanation with a clear answer

Mathematics
1 answer:
vladimir1956 [14]4 years ago
8 0

Using the law os cosines formula b^2 = a^2 + c^2 - 2*a*c*cos(B)

a = 17, b = 8, c = 16

8^2 = 17^2 + 16^2 - 2*17*16* cos(B)

64 = 289 + 256 - 544 * cos(B)

544*cos(B) = 289 + 256 - 64

544 * cos(B) = 481

cos (B) = 481/544

B = arccos(481/544)

B = 27.8 degrees

You might be interested in
This Mississippi River is the second longest river in the United States, second only to the Missouri River. The Mississippi Rive
scZoUnD [109]
The Mississippi river is 2,336.8 miles long
7 0
3 years ago
The mean of a set of 5 numbers is 12. One of the numbers in the set is 16. If 16 is removed from the list, what is the new mean?
Reil [10]

The new mean is 11

Step-by-step explanation:

The mean = sum of the numbers ÷ numbers

  • The mean of a set of 5 numbers is 12
  • One of the number is 16
  • We need to find the new mean if 16 is removed from the set of numbers

∵ The set has 5 numbers

∵ The mean of the 5 numbers is 12

- Substitute these values in the rule of the mean above

∴ 12 = sum of the numbers ÷ 5

- Multiply both sides by 5

∴ 60 = sum of the numbers

∵ One of the number is 16

∵ 16 is removed from the set of the number

- Subtract 16 from the sum and the numbers will be four numbers

∵ The new sum = 60 - 16

∴ The new sum = 44

∵ The set has 4 numbers

∴ The new mean = 44 ÷ 4 = 11

The new mean is 11

Learn more:

You can learn more about the mean in brainly.com/question/5069437

#LearnwithBrainly

6 0
3 years ago
The shop declare a discount of 20% and later a discount of 15% after
Zolol [24]
Let, the original amount = x
First discount = x * 0.20 = 0.20x

Amount after first discount = x - 0.20x = 0.80x
Second discount = 0.80x * 0.15 = 0.12x

Amount after second discount = 0.80x - 0.12x = 0.68x
Difference would be: x-0.68x = 0.32x

So, Your Answer would be 32%

Hope this helps!
8 0
3 years ago
Describe the graph of 2x + y = 11 and 2x + y = 2. Determine the number of solutions.
Alexandra [31]

Answer:

\mathrm{No\:Solution}

Step-by-step explanation:

By using comparing the left hand side of the two given equations we have:

\begin{bmatrix}2x+y=11\\ 2x+y=2\end{bmatrix}\\\\\begin{bmatrix}11=2\end{bmatrix}\\\\11=2\:\mathrm{\:is\:false,\:therefore\:the\:system\:of\:equations\:has\:no\:solution}

Best Regards!

7 0
3 years ago
For the equation y = - 3x + 2 2. determine the value of y when x = 2?
sergejj [24]
Y = -3(2) +22
Y = -6 +22
Y = 16
8 0
3 years ago
Read 2 more answers
Other questions:
  • 9 miles is approximately equal to 16 km. How many km are equal to 63 miles? How many miles are equal to 48 km?
    11·1 answer
  • Mrs dayson diveded her collection of 52 glass bear into equal groups sha had 1 bear left over how manny groups did Mrs dayson ma
    7·1 answer
  • Help plzzzz ............
    10·1 answer
  • What is the next number: 747, 757, 766, 774, 781,787, 792, ... *
    8·2 answers
  • in a survey four out of seven people named blue as their favorite color. One out of three named red.If 1,092 people were include
    9·1 answer
  • HELPWITH THIS QUESTION
    11·2 answers
  • Challenge:A swimming pool has two inflows and one oulow. Determine their maximal flowspeed in swimming pools per hour if you kno
    7·1 answer
  • A sheep producers from 2 to 5 gallons of milk per day. How many gallons of milk is this each year?
    9·1 answer
  • X divided by the sum of 4 and 9
    5·1 answer
  • A Karen's car is shown below.Which is closest to the distance traveled, in feet, after 3 full rotations of the tire? use pi = 22
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!