All vectors are in r^n. check the true statements below: a. if the vectors in an orthogonal set of nonzero vectors are normalized, then some of the new vectors may not be orthogonal. b. a matrix with orthonormal columns is an orthogonal matrix. c. not every linearly independent set in rn is an orthogonal set. d. if y is a linear combination of nonzero vectors from an orthogonal set, then the weights in the linear combination can be computed without row operations on a matrix. e. if l is a line through 0 and if y^ is the orthogonal projection of y onto l, then ||y^|| gives the distance from y to l.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation:

b. ol

step-by-step explanation:

i got the answer right on edg.

congruent: (geometry) (of figures) identical in form; coinciding exactly when superimposed.

you divide them and then you get the answer i took this class this year

step-by-step explanation: