2. (6 points each) which of the following sets are subspaces of r2? (a) the set of all two dimensional vectors with the property that the second entry is equal to the first entry. for example (b) the set of all two dimensional vectors with the property that the second entry is equal to one plus the first entry. for example

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.

play black ops 4 answer a

step-by-step explanation:

step-by-step explanation:

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