Answer:
-2x²-xy+y²
Step-by-step explanation:
-2hrhehjrjeierhhrhrirhfhrkwk
Answer:
107 square millimeters
Step-by-step explanation:
You can make this problem easier by splitting this into pieces you already know how to solve. So, you can draw a line down the middle to get 2 rectangles whose formula are Length X Width. Now, use the side lengths 5x7=35 and 8x9=72.
Add the 2 area of rectangles together to get 107 which is your total area.
<h3>
Answer: Choice D</h3>
To calculate a point estimate, we need to know the sample size.
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Explanation:
Let's go through the answer choices.
- A) False. A sample statistic could equal to the population parameter. It won't always happen, but it might happen sometimes (in rare cases).
- B) False. Point estimates are only defined for populations. They estimate a population parameter. For example, the sample mean xbar is a point estimate of the population mean (mu).
- C) False. In practice, we will hardly know anything about the population. This includes the population size. The goal of statistics is to measure population parameters by using sample statistics as estimation methods.
- D) True. We can easily calculate the sample size because it is relatively much smaller compared to the population. Plus, when selecting the sample, the sample size is often pre-determined to some set number. The sample size will help us determine things like the sample mean and the sample proportion.
Answer:
177
Step-by-step explanation:
8.7×5×2=87
10×3×3=90
87+90=177
40% = 0.4
Explication:
40 / 100 = 0.4
