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ioda
3 years ago
8

How do you calculate the area of a trapezoid?

Mathematics
1 answer:
german3 years ago
6 0
Atrap=(a+b)/2*h  a=base 1 b=base 2 c=height
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) Explain why the sample midrange might be preferred to the sample mean as an estimator of the population mean.
Citrus2011 [14]

Answer:

It is a good Estimator of the Population Mean because the distribution of the sample midrange is just same as the distribution of the random variable.

Step-by-step explanation: from the table,

Minimum value = 34

maximum values = 1084

The sample mid-range can be computed as:

(Min.value + max.value)/2

(34 + 1084)/2

Sample mid-range = 55

The sample midrange uses only a small portion of the data, but can be heavily affected by outliers.

It provides information about the skewness and heavy-tailedness of the distribution which is just same as the distribution of the random variable.

The nature of this distribution is not intuitive but the Central Limit in which it will approach a normal distribution for large sample size.

5 0
3 years ago
A rectangle has an area of 30 square meters and a perimeter of 34 meters. What are the dimensions of the rectangle?
garri49 [273]
x*y =30
2x+2y = 34

∴x=2
  y=15

4 0
4 years ago
Choose the correct simplification of the expression 16 over n to the negative third power. n to the third power over 16 16 over
jarptica [38.1K]

Answer:

{16n}^{3}

Step-by-step explanation:

We want to simplify:

\frac{16}{ {n}^{ - 3} }

To simplify this, we need to write the negative index as positive.

So we use the property,

\frac{1}{ {a}^{ - n} }  =  {a}^{n}

When we apply this property, we get:

\frac{16}{ {n}^{ - 3} }  = \: 16 \times \frac{1}{ {n}^{ - 3} }  =16 {n}^{3}

Therefore the fourth option is correct.

8 0
3 years ago
In the diagram, m∠COE = 55°. If m∠2 = 2x and m∠3 = x + 10, what is the measure of angle 2?
Rasek [7]
The answer is 30 degrees option b
4 0
3 years ago
Mark is 5 years older than Juan, who is X year old. Write an expression for Mark's age.​
scoundrel [369]

Answer:

y = x+5 where y is Mark's age

Step-by-step explanation:

Hi there, to answer this problem, you need to really think about what it is asking. In saying that mark is 5 years older than Juan, we know it is going to involve addition. Then, you simply need to think about the relation to Juan's age. In this case, Mark is older so you add to it. Hope this helped!

4 0
3 years ago
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