To find the area<span> of a </span>triangle<span>, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the </span>area<span> of each </span>triangle<span> is equal to one-half the </span>area<span> of the parallelogram. their is your answer </span>
Answer:
- Range = 1.2 , variance = 10.153, standard deviation = 3.18611.
- No.
Step-by-step explanation:
The foot lengths in inches for 11 randomly selected people taken in 1988. are
First, we need to arrange the given data in ascending order.
1. To find the range<u>,</u> we need to determine the maximum value and the minimum value in the given sample, and to subtract them. The maximum value is 9.7 and the minimum value is 8.5. Therefore,
The variance is given by
where
In this case, . Therefore,
Hence, the variance is
Now, we can calculate the standard deviation.
2. No, this statistics are not representative of the current population of all people, since they are measured for the 1988. population.
The answer to this question would be:
f(x) = 7 + 0.3x
Because 2 pounds will cost you $7, the $7 is required. If x is the number of ounces over 2 points and each ounce is 30 cents, it would only seem reasonable to multiply the ounces by 30 cents, right? Right. Therefore you add the 0.3x and you come towards the correct answer.
Answer:
A = x
Step-by-step explanation: