Answer:
(A)6 kilometers
Step-by-step explanation:
First, we determine the value of a using Pythagoras Theorem.
Therefore:
Distance along the long route = 8 + 15 =23 km
Distance along the shortcut =17 km
Difference =23-17 =6km
Therefore, Mr. Jones bikes 6km less when he takes the shortcut instead of the long route.
Answer:
Lewie Survey produces less valid result.
Step-by-step explanation:
Given:
1. Kelvin surveys every other person leaving the food area.
2. Lewie surveys every fifth person leaving the mall's main entrance.
Therefore,
Kelvin will able to produce valid result as he is surveying every person who is leaving food court.
Means,
There are high chances that would have bought food from the court.
Whereas,
Lewie is surveying every fifth person leaving the the mall's entrance.
Therefore,
Here probability to produce valid result is less as they may have not buy food or they may visited other shops.
So, Lewie survey will produce less valid result.
Determine how much of the job they have finished by calculating:
2/4 + 2/6 = 1/2 + 1/3 = 5/6 of the job has been done.
So, they have 1/6 of the job to go.
Then we write the following fractional equation:
t/4 + t/6 = 1/6
Multiply all by 12 (the LCD) and get
3t + 2t = 2
5t = 2
t = 2/5 hour = 24 minutes.
Understand?
