Answer:
40%
Step-by-step explanation:
18+12+20=50
20/50×100=
40%
The picture isn’t clear enough
Answer: c)
Step-by-step explanation:
This can be done through trial-and-error. Use the pythagoreas' theorem 
and if the left side of the equation is equal to the right, that is the answer.
(Do take note that c is the longest side.)
a)
Since 
, a) is wrong.
b)
Since 
, b) is wrong.
c) (answer)
Since 
, c) is correct.
d)
Since 
, d) is wrong.
For x^3-11x^2+33x+45 , we can make it an equation so <span>x^3-11x^2+33x+45=0. Next, we can find out if -1 or -3 is a factor. If -1 is a factor, than (x+1) is factorable. Using synthetic division, we get
x^2-12x+45
___ ________________________
x+1 | x^3-11x^2+33x+45
- (x^3+x^2)
_________________________
-12x^2+33x+45
- (-12x^2-12x)
______________
45x+45
-(45x+45)
___________
0
Since that works, it's either B or D. We just have to figure out when
</span> x^2-12x+45 equals 0, since there are 3 roots and we already found one. Using the quadratic formula, we end up getting (12+-sqrt(144-180))/2=
(12+-sqrt (-36))/2. Since sqrt(-36) is 6i, and 6i/2=3i, it's pretty clear that B is our answer
Step-by-step explanation:
2x + 1 = 3x -3 + 4 ➡ 2x + 1 = 3x + 1
x = 0
