If the goal of this question is to solve for x than the correct answer is 20. Hope this helped.
<h3>
Answer:</h3>
The radius would be <em>3.5 units</em>.
Step-by-step explanation:
This is because a radius is always half of a diameter.
By using that,
7 ÷ 2 = 3.5 units
Since there was no measurement listed in the question, the answer would be in "units."
X3-7x=6x-12
x3-7x-6x+12=0
x3-13x+12=0
(x-1)(x2+x-12)=0
Calculate delta of the second bracket:
delta = 1+4*12=49
sqrt(delta)=sqrt(49)=7
x_1=(-1-7)/2=-4
x_2=(-1+7)/2=3
(x-1)(x+4)(x-3)=0
Answear:
Roots: x=1, x=-4, x=3.
Answer:
The difference of the two means is not significant, so the null hypothesis must be rejected.
I think the answer is 37.7