Answer:
Hey there!
See Below.
Step by step explanation:
Total time taken= 11-5=6 hours
Time of stoppage= 1 hour
Actual time taken= 6 hours - 1 hour = 5 hours
- Hence,the speed is 50.4 km/h and the average speed is 42 km/h.
Area of the first circle = 16(pi)
We know that
Area of a circle = (pi) * (Radius)^2
Then
16(pi) = (pi) * (radius) ^2
(4)^2 = (Radius)^2
Radius = 4
Diameter = 8
Circumference = (pi) * Diameter
= 8(pi)
In case of the second circle
Area = (pi) * (Radius) ^2
25(pi) = (pi) * (Radius)^2
(5)^2 = (Radius)^2
Radius = 5
Diameter = 10
Circumference = 10(pi)
So
Circumference of first circle:Circumference of second circle = 8(pi):10(pi)
= 4:5
Answer:
Step-by-step explanation:
452 without estimating
450 with estimating
hope this helps
Answer:
When doing multiplication or division with measured values, the answer should have the same number of significant figures as the measured value with the least number of significant figures. Procedure to determine significant figures after multiplication or division: 1.
Step-by-step explanation:
Answer: 11/243
Step-by-step explanation:
Each question has 3 options: 2 incorrect and 1 correct
Probability P(correct guessing) = 1/3
P(wrong guessing) = 2/3
Probability P(4 answers correct) = 5C4 × (1/3)^4 ×(2/3)^1
Probability P(5 answers guessed correctly) =5C5 ×( 1/3)5
Therefore Probability P(4 or more answers correct) = P(4) + P(5) = (10/3^5) +( 1/3^5)
P(4 or more correct answers) = 11/243