Step-by-step explanation:
Perimeter = x + 2x + 2x = 5x
Since 5x <= 46.8cm, x <= 9.36cm.
The largest base is 9.36cm.
Answer: Random
Step-by-step explanation:
- In statistics , a random sampling technique is a simple sampling technique in which researcher choose 'n' individuals from N population , such that the chances for each individual to get selected are equal as
.
Here , the company wants to administer a satisfaction survey to its current customers.
So , Population → All current customers
Using their customer database, the company randomly selects 80 customers , it means each customer had the same chance to get selected.
Hence, the type of sampling is used : Random sampling
Hence, the correct answer is "Random" .
9514 1404 393
Answer:
A. 12.28 km²
Step-by-step explanation:
The area of the figure is the sum of the areas of its parts. The area of the triangular part is ...
A = 1/2bh
A = 1/2(3 km)(4 km) = 6 km²
__
The area of the semicircular part is ...
A = 1/2πr²
A = 1/2(3.14)(2 km)² = 6.28 km²
__
Then the area of the figure is ...
6 km² + 6.28 km² = 12.28 km²