Help me please! I’ll mark as brilliant

the pillow's length is 1.4 m

Step-by-step explanation:

Since the volume of the pillow is 0.35 m^3,

and the volume of the prism is the product of the area of the base (right angle triangle in our case) time it height (the unknown in our case,, we can set the following volume equation and solve for "x":

Volume = Area triangle *  x

0.35 = (0.5 * 1 / 2) * x

0.35 = 0.25 * x

x = 0.35/0.25

x = 1.4 m

853.3

step-by-step explanation:

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.