Strength [is proportional to] d^2
strength1/(d1)^2 = strength2/(d2)^2
800kg/(2cm)^2 = strength2/(3cm)^2
strength2 = 800 kg * (3 cm)^2/(2 cm)^2
strength2 = 800 kg * 3^2/2^2
strength2 = 800 kg * 9/4
strength2 = 1800 kg
Answer:
i dont know though its not homewrok
Step-by-step explanation:
Answer: A) Stratified random sampling
Step-by-step explanation:
Since , the researchers divided college students into the four classes (freshman, sophomore, junior, and senior) and then took a random sample of students from each class.
That means each category is participating in the sample.
It means , they used stratified sampling method where each class denotes a strata.
- <em>Stratified random sampling</em><em> is a kind of random sampling technique in which the researcher divides the whole population into some finite number of groups also known as strata , the he randomly pick individuals from each strata to make a sample. </em>
Here , each category participates in researcher's analysis.
Hence, the correct answer is A) Stratified random sampling .
Answer:
To solve a literal equation means to express one variable with respect to the other variables in the equation.
Step-by-step explanation:
1.
Determine which variable you need to isolate. Isolating a variable means getting the variable on one side of an equation by itself.
2.
Use algebra to solve for the desired variable. Use inverse operations to cancel variables on one side of the equation and move them to the other side. 3.
Keep the equation balanced. Whatever you do to one side of the equation, you must also do to the other side