Answer:
7.8. First plug in a number, then just keep trying till you get 7.8
//I'll use the discriminant rule for this.
b^2 - 4ac = 0 when one real root
Therefore, k^2 - 4*3*4= 0
k^2 = 48
k= +-4√3
Answer:
The answer is (A) ⇒ AB = 6
Step-by-step explanation:
∵ Answer (B) is the name of the segment
∵ In answer (C) A is a point can not = 6
∵ In answer (C) B is a point can not = 6
∴ The answer is (A)
When you write the length of any segment just writ the start point and end point of the segment
Suppose the three sides are a, b, and c, with c being the longest, a being the shortest
first equation: c=(a+b)-66
second equation: 2a=c-55=> c=2a+55
plug c=2a+55 into the first equation: 2a+55= a+b-66 => b=a+121
a+b+c=a+(a+121)+(2a+55)=7272 =>4a+176=7272 =>a=1774
a=1774, b=1895, c=3603