Answer:
atleast 385
Step-by-step explanation:
Given that an electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricity, they would like know the mean daily power usage for homes there.
Population std deviation = 
Sample size =
STd error of sample mean = 
Margin of error for 95% would be Critical value ( std error)
Here since population std dev is known we can use Z critical value= 1.96
Sample size should be atleast 385
Answer:
488 meters above sea level.
Step-by-step explanation:
Since the difference between that point and the tallest point is 1,232 you need to subtract 1,232 - 12 = 1,220 to get how far Mt ka'ala is from sea level. Since the ranger station is 2/5 up the mountain you can do 1,220/5 = 244. This is 1/5 of the way up the mountain. Then you do 244 x 2 = 488. That is 2/5 up the mountain. Final answer: The ranger station is 488 meters above sea level.
Answer:
12/13
Step-by-step explanation:
5+7=12
4+9=13
so the answer is 12/13. I hope that helps
Answer:
y = 7
Step-by-step explanation:
Solve for y:
7/y = 1
Take the reciprocal of both sides:
y/7 = 1
Multiply both sides by 7:
Answer: y = 7
Answer:
1 = 21 m
2 = 120 cm
3 = 84 cm
4 = 3 km
5 = 10 m
6 = 55 mm
7 = 60 cm
8 = 500 mm
Step-by-step explanation: you see where it says "perimeter = 3s" right? for each question you have to replace "s" with the number given so for the first one it would be 3 x 7. You had to do the same thing with the others but sometimes we get confused in math :D
