Answer:
(a) 0
(b) -3/26
Step-by-step explanation:
(a)
We essentially plug 1 in for x and 2 in for y.
Our expression is
, so making the correct substitutions yields:

So, the answer for part (a) is 0.
(b)
Again, we're now plugging in 1 for x and 5 for y:

So, the answer for part (b) is -3/26.
Answer:
Hi there!
The answer is A, and C
Step-by-step explanation:
cos(-x)=cos(x)
sec(-x)=sec(x)
4x - 5 = 3x + 2
- 3x - 3x
x - 5 = 2
+ 5 + 5
x = 7
I solve the equation using two-step equations in order to find the answer to the problem.
<span>(a+7) * (a-4)
a^2 - 4a + 7a - 28
a^2 + 3a - 28</span>