Answer:
7
Step-by-step explanation:
Given
49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively.
To find:
Which of these types of sampling is used: random, stratified, systematic, cluster, convenience?
Explanation:
It is given that,
49, 34, and 48 students are selected from the Sophomore, Junior, and Senior classes with 496, 348, and 481 students respectively.
That implies,
Since Stratified random sampling is a method of sampling that involves dividing a population into smaller groups–called strata.
Then, the random sampling used is Stratified Random Sampling.
Answer:
The square perimeter would be 32 yards and 8 times 4 equals 32 so it would be 4yd
Step-by-step explanation:
9514 1404 393
Answer:
√869 ≈ 29.48 square units
Step-by-step explanation:
The vector cross product is ...
(3·1 -5·4, -6·1 +2·4, 6·5 -2·3) = (-17, 2, 24)
The area is the magnitude of this vector, so is ...
√((-17)² +2² +24²) = √(289 +4 +576) = √869 ≈ 29.48
The area is about 29.48 square units.
