The answer you selected in that photo given, is correct. I can tell just by using common sense and by judging the other options second option (B) is looking the most clearest one to me.
Answer:
Step-by-step explanation:
We need to solve the following root equation:
![\sqrt[3]{x-1} + 2 = 0](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Bx-1%7D%20%2B%202%20%3D%200)
1. First, we need to add minus two to both sides of the equation:
![\sqrt[3]{x-1}= -2](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7Bx-1%7D%3D%20-2)
2. Elevate each side of the equation to the power of 3:
3. Solve for 'x':
Therefore, the result is:
✔️
Answer:
m∠2 = 140°
Step-by-step explanation:
m∠1 = m∠3, since they're vertical angles.
Solve for x:
Plug in 6 for x for either m∠1 or m∠3. Doesn't matter since they're equal.
m∠1 = (2(6) + 28)°
m∠1 = (12 + 28)°
m∠1 = 40°
Now that we know m∠1, we can now solve for m∠2.
m∠1 + m∠2 = 180°
40° + m∠2 = 180°
m∠2 = 140°
Answer: ( 8.11 , 9.69)
the 95% confidence interval of the true mean weight
= ( 8.11 , 9.69)
Step-by-step explanation:
Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.
The confidence interval of a statistical data can be written as.
x+/-zr/√n
Given that;
Mean x = 8.9
Standard deviation r = 0.9
Number of samples n = 5
Confidence interval = 95%
z(at 95% confidence) = 1.96
Substituting the values we have;
8.9+/-1.96(0.9/√5)
8.9+/-1.96(0.4025)
8.9+/- 0.79
= ( 8.11 , 9.69)
Therefore at 95% confidence interval (a,b) = ( 8.11 , 9.69)
