True/False. If the answer is true, provide an explanation. If it is false, give a counter-example or an explanation. a) Let B be a basis for R^n. The coordinate function CB is an isomorphism.
b) Let T:R^7 → R^5. If dim(Im(T)) = 3 then dim(ker(T)) = 2.
c) Letf:R^n → R^n be a linear transformation and let B1 and B2 be bases of R^n. If f is an isomorphism, then [f]B1 B2 is also an isomorphism.

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

b, 20 yards

step-by-step explanation:

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6

both triangles are similar because 2 is just smaller than the big one 1 is similar because they are facing different way's but are similar to each other

step-by-step explanation: