Answer:
me omg i failed english because if the two essays I wrote
Answer:
1
Step-by-step explanation:
factors of 32 = 1, 2, 4, 8, 16, 32; factors of 45 = 1, 3, 5, 9, 15, 45) and choose the greatest factor that exactly divides both 32 and 45 is 1
Answer:
I think it is right but not sure
Answer:
The correct answer is x = -2.
Step-by-step explanation:
To solve this equation, we must remember that it is our end goal to get the variable x alone on one side of the equation.
To do this, our first step should be to add 12 to both sides of the equation to cancel the -12 on the right side. This is modeled below:
-14 + 12 = x - 12 + 12
If we add together the like terms to simplify, we get:
-2 =x
This is our answer. To check that our answer is correct, we can plug in the value we obtained for x back into the original equation.
-14 = x - 12
-14 = -2 - 12
-14 = -14
Since plugging in our value for x yielded a true statement, we can conclude that our answer is correct.
Hope this helps!
Answer:
4.692 to 7.308
Step-by-step explanation:
Given :
n1 = 25 ; n2 = 20 ;
Mean x1 = $12 ; mean x2 = $6
Standard deviation, s1 = 3 ; s2 = 1
Confidence interval :
(x1 - x2) ± t*√(s1²/n1) + (s2²/n2)
x1 - x2 = (12 - 6) = 6
√(s1²/n1) + (s2²/n2) = √(3²/25) + (1²/20) = 0.640
Degree of freedom :
((s1²/n1) + (s2²/n2))² / (s1²/n1)²/n1-1 + (s2²/n2)²/n2-1
Numerator = 0.1681
Denominator = 0.0054 + 0.0001315 = 0.0055315
Degree of freedom = 0.1681 / 0.0055315 = 30.38 = 30
Tcritical at 0.05, df = 30 = 2.042272
Hence ;
6 ± 2.042272(0.640)
6 ± 1.30705408
Lower boundary = 6 - 1.30705408 = 4.69294592
Upper boundary = 6 + 1.30705408 = 7.30705408
(4.693 ; 7.307)