Answer: Surface area= 54
Step-by-step explanation:
To find the surface area of a cube you do 6 times s^2
S is the side length. In this case that is 3 cm. S^2 is 9
So now you do 6 times 9, and that is 54.
So, the surface area is 54.
A) by completing the square... X^2-8x+16+20-16 = (x^2-4)^2 +20-16=(x^2-4)+4
B) Since the coefficient of x^2 is positive, it is a quadratic function which increases positively. You know that it will always be above the x axis and therefore positive since the vertex is at (4,4) and increasing
Answer:
standard deviation
Step-by-step explanation:
The standard deviation is defined as the measure of how spread out the numbers are in a given population. In other words, statistics refers to the amount of the dispersion or variation of a set of given values.
It is denoted by the Greek letter sigma, σ.
Thus the standard deviation is the measure of how dispersed the data are in the population which can be used to provide context to a larger data sets.
Answer:
x = 9
Step-by-step explanation:
