$0.19 because if you divide 3.99 by 21 you get 0.19
The sum of the other 2 sides must be greater than 13.
The answer would be 70 degrees.
In order to find this answer, we must first look at the cos value of an angle. The unknown angle here gives us an adjacent side of 3.4 and a hypotenuse of 10. Thus, we can use the following with cos.
Cos(A) = 3.4/10 or Cos(A) = .34
As a result, we can then use the arccos function to find the answer.
acrcos(.34) = A
70.12 = A
Then when we round, we'd get 70.
Answer:
d/2+9=(-15)
Step-by-step explanation:
-48
if you want me to explain, let me know in the comments !