Use the identity below to complete the tasks: a3 − b3 = (a − b)(a2 + ab + b2) when using the identity for the sum of two cubes to factor 125q6 − r6s3. what is a? what is b?

a = 5q²

b = r²s

Step-by-step explanation:

The given identity is

we have to use this identity to factor of two cubes given as " alt="125q^{6}-r^{6}s^{3}=(5q^{2})^{3}-(r^{2}s)^{3}" />" />

As this expression is in the form of a³- b³

Here a is 5q² and b is r²s.

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.