Can someone help me please?
1 answer:
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Answer:
Total number of bracelets Brianna have are 12 .
Step-by-step explanation:
Let us assume that the total numbers of the bracelets be x .
As given
Brianna has 4 pink bracelets.
One third of all her bracelets are pink .
Than the equation becomes
Simplify the above
x = 4 × 3
x = 12
Therefore the total number of bracelets Brianna have are 12 .
Take the cross product of both sides of 
with 
to generate a system of three simultaneous equations.
since
for any vector 
.
Finally, use the fact that the cross product is anticommutative, i.e.
. The conclusion follows.
since
Finally, use the fact that the cross product is anticommutative, i.e.