Answer:
A,C
Step-by-step explanation:
sin 2x=sin (x+x)=sinx cos x+cos x sin x=2 sin x cos x
or =2 cos x sin x
[sinx cox=cos x sin x ]
You add two equations together to eliminate a variable. This particular problem is nice, because it's already setup to eliminate X.
3x - 4y = 9
<span>-3x + 2y = 9
</span>
When we add these two together, 3x - 3x cancels each other out, leaving us with 0x, or nothing.
We continue with -4y + 2y (leaves us with -2y) and 9+9 (18).
-2y = 18
18/-2 = -9.
Now we have y = -9, and we can go back into the problems to solve for x.
<span>3x - 4(-9) = 9
</span>
3x + 36 = 9.
3x = -27
x = -9.
Confirm with the final equation:
-3(-9) + 2(-9) = 9
27 - 18 = 9
9 = 9 --- Confirmed.
Well you have to multipy 4 x 11 and then add 4 x 10
Answer: 4:18
Work:
2:9
2 <em>inch</em>:9 <em>feet</em>
2 · 9 = 18
2 · 2 = 4
4 <em>inch</em>:18 <em>feet</em>
Solution:
The given function is,
y=x(x-2)(x+3).
It is a cubic polynomial, whose Zeroes can be evaluated by, putting , y=0
→x(x-2)(x+3)=0
→x=0, ∧ x-2=0 ∧ x +3=0
→ x=0 ∧ x=2, ∧ x= -3
So, x=0, 2, -3 are zeroes of the cubic polynomial or the given function.
