Answer:
ABCDEFG NM,
Step-by-step explanation:
Answer:
im pretty sure the triangle one is 2,1 but im not sure what the next is. also you can message me on discord if you ever need to talk or if you wanna help eachother with attendance quizzes. Ericishere#6881
Step-by-step explanation:
5n+5=2n+14
5n=2n+9
3n=9
n=3
Hope This Helped
Answer: (36.7, 39.3)
Step-by-step explanation:
Confidence interval for population mean:
, where n= sample size,
= sample mean,
= population standard deviation,
= critical z value.
Given: n= 40 , 
Critical z-value for 90% confidence = 1.645
Then, required confidence interval:

Hence, a 90% Confidence Interval = (36.7, 39.3)
Answer:
Step-by-step explanation:
d = 200 miles
B rate = x
A Rate = x + 20
Each has traveled two hours
The total distance each travels after two hours is 200 miles (they pass each other).
d = r * t
2*x + 2*(x + 20) = 200 Remove the brackets
2x + 2x + 40 = 200 Combine like terms
4x + 40 = 200 Subtract 40 from each side
4x = 200 - 40
4x = 160 Divide by 4
x = 160/4
x = 40
There B's rate is 40 miles / hour
A's rate is 40 + 20 = 60 miles / hour