Train A:
Distance (s) = 420 miles
Time (t) = 3 hours
Speed (v) = distance ÷ time = 420 ÷ 3 = 140 miles/hour
Train B:
Distance (s) = 420 miles
Time (t) = 2.25 hours
Speed (v) = distance ÷ time = 420 ÷ 2.25 = 186.7 miles/hour
Answer: 8.50
Step-by-step explanation: I like to turn fractions into deciamls.
5/6 = .83 (I get 0.83 by 5 divided by 6)
2/3 = .66 (I also got 0.66 by 2 divided by 3)
.8333 + .66 = 149 = 1.49333
5 + 2 = 7 + 1.49 = 8.49
Now round up 8.49333 and you'll get 8.50 or 8 ¹/²
Let me know if I'm wrong, have a good day!
Is that one or two questions?
5.1234567891011121314151617181920
Answer:
The probability is;
0.0000003645
Step-by-step explanation:
The probability of packages being early p is 90% = 0.9
The probability of packages being late q will be 1-p = 1-0.9 = 0.1
So the probability of 2 out of 10 random late will be subject to Bernoulli approximation of the Binomial theorem
That will be;
P(X = 2) = 10 C 2 0.9^2 0.1^8
= 0.0000003645