Hey There!
A solid figure with polygon faces is called the <span>Polyhedron.
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A and c are correct
hope this helps! :D
<span>two divided by the difference of a number and 3 minus 4 divided by a number plus 3, equals 8 times the reciprocal of the difference of the number squared and 9.
let x=number
2/(x-3)-4/(x+3)=8/(x^2-9)=8/(x+3)(x-3)
LCD: (x+3)(x-3)
2(x+3)-4(x-3)=8
2x+6-4x+12=8
-2x+18=8
-2x=-10
x=5</span>
0.17670898718 that`s what it equals your welcome
Answer:
a=-2î+j-5k
|a| = √(−2)² +1² + (−5)²
a = √√4+1+25
a = √30
Thus, direction cosines of a are
(- 2/(sqrt(30)), 1/(sqrt(30)), - 5/(sqrt(30)))
