In order to estimate the mean, you need to choose a value to represent the number in each category of accidents. It is often convenient to use the middle value of the range.
.. (4*6 +10*10 +15*6 +20*9)/(6 +10 +6 +9) = 394/31 ≈ 12.7

6 0

3 years ago

Is y = 2x Linear or non-linear and why?

pshichka [43]

Answer:it is linear because every time x increases 1, y increases by 2.

Step-by-step explanation:it is a linear relationship and it is changing at a constant rate

3 0

2 years ago

PLEASE PLEASE PLEASE HELP I really don’t understand this.

Amiraneli [1.4K]

Answer:

The second option is the answer.

Step-by-step explanation:

Do f(x) first, and then plug that into g(x).

$f(x)=\sqrt{x+3}$

$(g o f)(x) = \frac{\sqrt{x+3}^{2}+2 }{\sqrt{x+3}}=\frac{x+5}{\sqrt{x+3}}$

3 0

3 years ago