Answer:
Step-by-step explanation:
We have been given that Courtney had 15 hits in 60 at bats.
We know that batting average can be determined by dividing hits by number of at-bats.
Therefore, Courtney's batting average is 0.25.
We are already told that Katie's average was 0.300. Therefore, Katie's batting average is 0.300.
We have been given that Sara got a hit 32.5% of the time. To find Sara's batting average, we need to convert 32.5% into decimal as:
Therefore, Sara's batting average is 0.325.
This kind of sampling is called the Cluster sampling. The cluster sampling method is done by dividing the population by groups called clusters. There will be an equal number of samples drawn from each cluster using simple random sampling. In here, the population are the students which are divided into clusters - by year level. 15 students will be selected from each cluster.
Answer:
12
Step-by-step explanation:
the lcm of 3 and 4 is 12
Answer:
x = 1
Step-by-step explanation:
To solve for a variable, you need to get the variable on one side of the equation, and by itself.
4x + 5 = x + 8
4x = x + 3 --- subtract 5 from both sides
3x = 3 --- subtract x from both sides
x = 1 --- divide both sides by 3
