Asimple graph is called regular if every vertex of this graph has the same degree. a regular graph is called n-regular if every vertex in this graph has degree n. recall that kn is the complete graphs with n vertices. and km, n is the complete bipartite graph (see the definition in the book). (a) is kn regular? what �s the chromatic number of kn? (b) for which values of in and n graph km, n is regular? what is the chromatic number of km, n? (c) how many vertices does a 4-regular graph with 10 edges have?

i believe the answer is d.

hope it you! : d

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!