The block in this illustration is floating in water, which has a density of  1.00  g/cm3  . 
what is a good estimate of the density of the block if about 30 percent of the block is below water?

a. 0.30  g/cm3

b. 0.60  g/cm3

c. 0.90  g/cm3

d. 1.00  g/cm3

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

the circle one

your answer is -9

step-by-step explanation:

the diagram shows you   triangle def with de=4, df=9 and de≠df≠ef.

the sum of the lengths of two triangles' sides are always greater than the length of the third side:

substitute sides lengths:

then 5< ef< 13 (option 3 is true).

def is a scalene triangle with all sides of different lengths (option 5 is true, option 2 is false).

answer: correct choices are 1, 3 and 5