Time = distance / speed
t = 350/50
t = 7 hrs
arrival time at New York City is 1 pm. on Thursday
Answer: C
Step-by-step explanation:
Answer:
47 minutes added to 6:57 PM would be 7:44 PM
Step-by-step explanation:
You just add 47 minutes, but remember the hour starts over at the 60th minute!
Hope this helps ya out fam!
~theLocoCoco
Answer:
At least 9604 drivers need to be surveyed to be 95% confident that the population proportion is estimated to within 0.01.
If confidence level is chosen higher than 95% then minimum sample size requried in the survey increases
Step-by-step explanation:
The following formula is used to compute the minimum sample size required to estimate the population proportion within the required margin of error:
n≥ p×(1-p) × where
- p is the population proportion who always buckle up before riding in a car (estimated as 0.5 when unknown)
- z is the corresponding z-score for 95% confidence level (1.96)
- ME is the margin of error in the estimation (0.01)
Then,
n≥0.5×0.5 × ≈ 9604
If confidence level is chosen higher than 95% then the z value in the equation would be bigger than 1.96. Therefore minimum sample size requried in the survey increases.
This is currently your equation since you do not know "b"
y = 2/3x + b
To find "b" you plug in the point (4,2) into the equation.
y = 2/3x + b
2 = 2/3(4) + b
2 = 8/3 + b (subtract 8/3 on both sides to get "b" by itself)
2 - 8/3 = b (make the denominators the same)
6/3 - 8/3 = b
-2/3 = b
So: y= 2/3x - 2/3