The answer would be 11. Hope this helps :)
Your answer would be x = 1.
The rules for a kite shape is that two pairs are of equal length, which means we can say that AD = CD and thus form an equation:
3x + 4 = x + 6
- x
2x + 4 = 6
- 4
2x = 2
÷ 2
x = 1
I hope this helps!
B. (k+10f)(k-5f) you can tell in 2 ways. 1. if the second sign is neg then the signs in the factors are going to be one neg and one positive so that knocks out C and D. Then you look at the second term and since the 5 is positive then the 10 has to be positive so you end up with a positive 5kf.
The second way is to FOIL them out. When you check B you get

combine your like terms and you have your original expression of

Hope that helps
Answer:
21/7= 3
Step-by-step explanation: