I believe the answer is A
Assuming it's just wanting to know what -4+or- sqrt(26):
adding: x= 1.1
subtracting: x=-9.1
Hope this helped!
Assuming you mean f(t) = g(t) × h(t), notice that
f(t) = g(t) × h(t) = cos(t) sin(t) = 1/2 sin(2t)
Then the difference quotient of f is

Recall the angle sum identity for sine:
sin(x + y) = sin(x) cos(y) + cos(x) sin(y)
Then we can write the difference quotient as

or

(As a bonus, notice that as h approaches 0, we have (cos(2h) - 1)/(2h) → 0 and sin(2h)/(2h) → 1, so we recover the derivative of f(t) as cos(2t).)
Answer:
x=-25/4
Step-by-step explanation:
First your make both sides clean,
x+4=-9/4
Then you minus 4 on both sides to balance the equation:
x+4-4=(-9/4)-4
x= -25/4
Since we removed one ace out of 52 cards now remains 51 cards and 3 aces.
The answer is 3/51