Simplify 2(x - 3) + 7(x + 2).

One variable in a study measures how many serious motor vehicle accidents a subject has had in the past year. Explain why the me

Naya [18.7K]

Answer:

The mean is more useful in this case because it would give an average value of the accidents for example 3 accidents per year but the median would give the middle value which may be 5 or greater or much lesser than the average. It would not give an approximate value of occurrences.

Step-by-step explanation:

Mean is the averaage of all the values.

Median is the value of the data which gives an estimate of the middle value. Middle values can be different than the average values.

The mean is

1) rigorously defined by a mathematical formula.

2) based on all the observations of the data

3) affected by extreme values

The meadian is

1) computed for open end classes like income etc.

2) not rigorously defined

3) is located when the values are not capable of quantitative measurment.

4) is not affected by extreme values.

The mean is more useful in this case because it would give an average value of the accidents for example 3 accidents per year but the median would give the middle value which may be 5 or greater or much lesser than the average. It would not give an approximate value of occurrences.

8 0

3 years ago

Y I have<br>£ 1. I spend 45p. How much do I have left?

loris [4]

Answer:

55p

Step-by-step explanation:

£1 (100p) - 45p = 55p

3 0

3 years ago

Solve the following system using ANY method.

creativ13 [48]

Answer:

a=-2 and b=-9

Step-by-step explanation:

To solve the system, substitute one equation into another.

8a -4b = 20 becomes -4b = 20 - 8a. Dividing by -4 on both sides, b = 2a-5.

Now substitute the equation b=2a-5 into 5a - 8b = 62.

5a - 8(2a-5) = 62

5a - 16a + 40 = 62

-11a + 40 = 62

-11a = 22

a=-2

To find b, substitute a=-2 into b=2a-5.

b = 2(-2) - 5

b = -4 - 5

b = -9

4 0

3 years ago

Find the area of parallelogram ABCD given me A = 300 and the following measures.

muminat

60 inches is the area of the parallelogram

7 0

3 years ago

Read 2 more answers

Line WS is parallel to line KV. Line RT is perpendicular to line KV. Explain the relationship of line RT to line WS. Provide at

Gala2k [10]

The product of the slope of the line RT and WS is equal to -1 if the line WS is parallel to line KV. Line RT is perpendicular to line KV.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have line WS is parallel to line KV. Line RT is perpendicular to line KV.

Let's suppose the slope for the line WS is m1, for the slope for the line KV is m2, and for the line RT is m3.

We know if the two lines are parallel, their slope will be the same mathematically,

m1 = m2

And if the two lines are perpendicular to each other, their product of the slope will be -1

Because the slope is given by:

$\rm tan\theta = \dfrac{m_1-m_2}{1+m_1m_2}$

If parallel, then tanθ = 0

$\rm m_1 -m_2= 0\\m_1 =m_2$

If perpendicular, then $\rm tan\theta = \dfrac{1}{0}$

$\rm 1+m_1m_2 = 0\\m_1m_2 = -1$

Thus, the product of the slope of the line RT and WS is equal to -1 if the line WS is parallel to line KV. Line RT is perpendicular to line KV.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

7 0

2 years ago