Answer:
3.1415967382
Step-by-step explanation:
Letter D
1-sin^2(x) = cos^2(x)
= sin^2(x)/cos^2(x)
= tan^2(x)
Answer:
(a) The system of the equations
has no solution.
(b) The system of the equations
has many solutions 
Step-by-step explanation:
(a) To find the solutions of the following system of equations
you must:
Multiply
by 2:

Subtract the equations

0 = -3 is false, therefore the system of the equations has no solution.
(b) To find the solutions of the system
you must:
Isolate x for 

Substitute
into the second equation

The system has many solutions.
Isolate y for 

OK.......
Evaluating [(21 + 6) - 32] 2 * 9

Your answer would be
-90
H0P3 It H3LPS :)
The answer is E because 3 x 0 - 4 x -2 = 8