Answer:
The degrees of freedom associated with this problem are 16.
Step-by-step explanation:
The degrees of freedom associated with a problem, independent of the confidence level, is the sample size subtracted by 1.
In this problem, we have that:
She takes a random sample of 17 trucks, so the sample size is 17.
This means that the degrees of freedom associated with this problem are 16.
Answer:
Option D. It's a perfect square trinomial.
Step-by-step explanation:
(a) 36x² - 4x + 16
= (6x)² - 2(2x) + (4)²
It's not a perfect square trinomial
(b) 16x² - 8x + 36
= (4x)² - 2x(4x) + (6)²
It's not a perfect square trinomial
(c) 25x² + 9x + 4
= (5x)² + 2
+ (2)²
It's not a perfect square trinomial
(d) 4x² + 20x + 25
= (2x)² + 2(10x) + (5)²
= (2x+5)²
It's a perfect square trinomial.
So here, just work backwards:
7+8=15
15/3=5
Answer:
f=4
Step-by-step explanation:
-11f = 7(1-2f)+5
step 1 distribute what is outside of the parenthesis to the inside of the parenthesis
-11f=7-14f+5
step 2 combine like terms
-11f=12-14f
step 3 add 14 to each side
3f=12
step 4 divide each side by 3
f=4
