12.0 is the answer I think
Answer:
Silver
Step-by-step explanation:
Find the volume of the coin
<u>Volume of a cylinder</u>

Given:
Substituting given values into the formula to find the volume:


Find the density of the coin given it has a measured mass of 18.54 g
<u>Density formula</u>

where:
= density- m = mass
- V = volume
Given:
- m = 18.54 g

Substituting given values into the density formula:


Given:
Therefore, as
the coin is made from silver.
Answer:
When sampling from a population, the sample mean will: be closer to the population mean as the sample size increases.
Step-by-step explanation:
The sample mean is not always equal to the population mean but if we increase the number of samples then the mean of the sample would become more and more closer to the population mean.
Usually the population size is very huge that is why we select a random sample from the population, care must be taken to ensure randomized sampling otherwise results would not be accurate. After that we have to make sure that the number of samples are enough for the given population size. The number of samples depends upon the shape of the population. If the population is normal than according to central limit theorem, a less number of samples would be enough to ensure normal distribution of sampling mean, otherwise a greater sample size will be required.
Answer:
x=9
Step-by-step explanation:
The triangle is equilateral which means the sides are equal.
x+9 = 2x
Subtract x from each side
x+9-x = 2x-x
9 =x
False. Anything times 0.8 except 0, is 0.8 or more.