Answer:
See Explanation
Step-by-step explanation:
Line l is bisector of MO... (given)
![\therefore NO + NO = MO..[From \:(1)]](https://tex.z-dn.net/?f=%20%5Ctherefore%20NO%20%2B%20NO%20%3D%20MO..%5BFrom%20%5C%3A%281%29%5D%20)
Thus Proved
Answer:
Step-by-step explanation:
We want to determine a 98% confidence interval to estimate the true mean shear strength of anchor bolts.
Number of sample, n = 78
Mean, u = 4.25
Standard deviation, s = 1.3
For a confidence level of 98%, the corresponding z value is 2.33.
We will apply the formula
Confidence interval
= mean ± z × standard deviation/√n
It becomes
4.25 ± 2.33 × 1.3/√78
= 4.25 ± 2.33 × 0.147
= 4.25 ± 0.34
The lower end of the confidence interval is 4.25 - 0.34 = 3.91
The upper end of the confidence interval is 4.25 + 0.34 = 4.59
b) the confidence interval would still be valid because the number of samples is large(> 30)
Answer:
45
Step-by-step explanation:
-5x^2 - y^3 when x = -4 and x = -5
~Substitute
-5(-4)^2 - (-5)^3
~Simplify
-5(16) - (-125)
-80 + 125
45
Best of Luck!
You can tell if a graph represents a proportional relationship by identifying the y-intercept, or the point of the line that crosses the y-axis.
If the y-intercept is 0, then the relationship is proportional. This is called a direct relationship.
If the y-intercept is anything other than 0, then the relationship is not proportional. This is called an indirect relationship.
I hope this helps!
