Answer:
Before coming back up to the surface the maximum depth, Cassidy went was 6.25 ft. below the water surface
Step-by-step explanation:
The height of Cassidy's diving platform above the water = 6 ft.
The equation that models her dive is d = x² - 7·x + 6
Where;
d = Her vertical position or distance from the water surface
x = Here horizontal distance from the platform
At Cassidy's maximum depth, we have;
dd/dx = d(x² - 7·x + 6)/dx = 2·x - 7 = 0
x = 7/2 = 3.5
∴ At Cassidy's maximum depth, x = 3.5 ft.
The maximum depth, 
= d(3.5) = 3.5² - 7 × 3.5 + 6 = -6.25
The maximum depth, Cassidy went before coming back up to the surface = = -6.25 ft = 6.25 ft. below the surface of the water.
Answer:
angle A + angle B = 180 degrees is correct
Step-by-step explanation:
Answer:
1.25
Step-by-step explanation:
The answer in decimal is 1.25
35/28= 1.25
Answer:
-18/6 18/6 or 9/3, -9/3 or 3/1, -1/3
Hope this helps
Answer:
The standard error of the sample mean is _17.677_ psi.
Step-by-step explanation:
<u>Explanation</u>:-
A random sample of n = 8 specimens is collected.
Given sample size is n = 8
Given mean of the population 'μ' = 2500 psi
standard deviation 'σ' = 50 psi
Let x⁻ is the mean of the observed sample
Standard error of the sample mean = 
...(i)
Given Population of standard error (S.D) 'σ' = 50 psi
Now substitute all values in (i)
<u>Conclusion</u>:-
The standard error of the sample mean is _17.677psi.
