2.8a^2=55
a^2=55/2.8
a= square root of 55/2.8
Answer:
Step-by-step explanation:
<u>Find the derivative of the function when x=3</u>
<u />
Since the change in the value of the function is 
and we know that the change in x is 
, then we have:
Therefore, the 2nd option is correct
<u />
<h3>Answer:</h3>
a) no solutions
b) B = 49.8° or 130.2°
<h3>Explanation:</h3>
a) By the law of sines, ...
... sin(B)/b = sin(A)/a
... sin(B) = b·sin(A)/a = (11/9)·sin(61°) = 1.069 . . . . . not realizable
there is no solution
b) As before, ...
... sin(B) = (28/25)·sin(43°) ≈ 0.763838...
... B = arcsin(0.763838...) ≈ 49.80°
The side length b is longer than the side length a, so there will be two solutions. The other angle for B is the supplement to this one:
... B = 180° -49.8° = 130.2°
The other leg would be 22.5 inches so the second option
Answer:
(- 5, - 2 )
Step-by-step explanation:
Under a clockwise rotation about the origin of 90°
a point (x, y ) → (y, - x ), thus
(2, - 5 ) → (- 5, - 2 )
