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
KATRIN_1 [288]
3 years ago
10

Find m∠A. A. 32 B. 26 C. 27 D. 30

Mathematics
1 answer:
krok68 [10]3 years ago
3 0
<h3>Answer: B. 26</h3>

============================================

Use law of cosines to find angle A

a^2 = b^2 + c^2 - 2*b*c*cos(A)

9^2 = 6^2 + 14^2 - 2*6*14*cos(A)

81 = 36 + 196 - 168*cos(A)

81 = 232 - 168*cos(A)

81 - 232  = -168*cos(A)

-151  = -168*cos(A)

-168*cos(A) = -151

cos(A) = (-151)/(-168)

cos(A) = 0.8988095

A = arccos(0.8988095)

A = 25.9979801

A = 26 degrees approximately

You might be interested in
Isolate the absolute value expression in the following equations to determine if they can be solved if so find and graph the sol
aev [14]

Answer:

x=-4

Step-by-step explanation:

2(|x+4|+3)=6

take out absolute value

2(x+4+3)=6

remove parrenthesis

2x+8+6=6

Simplify

2x+14=6

    -14  -14

2x=-8

x=-4

Hope this helps!!!!!

4 0
3 years ago
What is 4/2/7 as an improper fraction
Zanzabum

If "4/2/7" is all we have to work with, then PEMDAS rules will save the day. Do the division from left to right.

4/2 becomes 2. Then we have 2/7, a proper fraction. I don't see where an improper fraction would come from in this case.


3 0
3 years ago
Read 2 more answers
Ron used 121 congruent equilateral triangles with 2 cm side lengths to form one large equilateral triangle. What is the perimete
Pepsi [2]
The number of smaller triangles along one side of the larger triangle is the square root of the total number of triangles. The perimeter of the large triangle is ...
  3*(2 cm)*√121 = 66 cm
5 0
3 years ago
My new speakers were $155 but I also had to pay the 6% tax what did I pay for my new speakers​
elena-s [515]

Answer:

164.30

Step-by-step explanation:

just find 106 percent of 155

6 0
3 years ago
SEE PICTURE FOR QUESTION​
castortr0y [4]
I think the answer is B
7 0
3 years ago
Other questions:
  • When evaluating proportions, we write the ratios in fractional form and then we
    14·1 answer
  • Kazimir stopped jogging at 8:15. He started jogging 20 minutes earlier. At what time did Kazimir start jogging?
    15·2 answers
  • Find the missing numerator in each of the following fractiions? A. 5/6= /12. B. 2/4= /36. C. 2/5=/20. D. 4/25=/100
    9·1 answer
  • Add (7x2 – 3x) + (5x-6).<br> A. 7x2 + 2x-6<br> B. 4x² - x<br> c. 7x2 - 2x- 6<br> D. 7x2 + 8x- 6
    8·1 answer
  • Plz help I'll give brainlest!!
    6·1 answer
  • The length of the rectangle is 8 cm greater than its width find the dimensions of the rectangle if it's area is 105cm^2
    10·1 answer
  • Express the product of 500 and 400 in scientific notation
    11·2 answers
  • Please answerrrrrrrrrr​
    14·1 answer
  • Mr. Richards saves $4,639. Then, he uses one fourth of his savings to take flying lessons. How much money does Mr. Richards spen
    14·1 answer
  • Multiply 1 over 2 multiplied by negative 1 over 4 . Which of the following is correct?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!