Answer:
Mean = 1.9
Standard deviation = 0.6
Step-by-step explanation:
The Mean is calculate by the formula:

⇒ 
Thus Mean to the nearest tenth is 1.9
Standard Deviation is the square root of sum of square of the distance of observation from the mean.
where,
is mean of the distribution.
Putting all values in the formula, We get
Standard Deviation = 0.597 ≈ 0.6
The number that represents 8/9 to the nearest percent is .89
This kind of triangle is acute triangle because on the given three angles, none of them does not exceed more than 90°.
Answer: V≈5.21 cm³
Step-by-step explanation:
To find the volume of a rectangular prism, you multiply the length, width and height.

Since we were given the length, width and height, we can directly multiply them together.
[multiply]

Now, we know that the volume is approximately 5.21 cm³ or 125/24 cm³.