Matriz: 0 1 3 0
1 0 3 0
3 3 8 0
0 0 0 2

Determine uma base para o subespaço definido pelo conjunto solução do sistema linear (A+I4)X=0.
A. {(−3,0,1,0),(−1,1,0,0)}
B. {(−3,0,1,0),(−3,1,0,0)}
C. {(−1,0,1,0),(−1,1,0,0)}
D. {(−1,0,1,0),(−3,1,0,0)}

Eu não entendi nada dessa matéria :'(

you can not solvr this without numbers

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet

if the rectangular pool has a area of 192 square ft. and length of 15 ft. you must divide 15 into 192. 192 ÷ 15 = about 13 ft.