Answer:
what is the question?
Step-by-step explanation:
Answer:
Factoring
Step-by-step explanation:
When we are solving a quadratic equation by the factorization method, each factor is set as being equal to zero.
The solution of each bracket of factors gives the root of the quadratic equation.
For example;
x2 + 16 = 10x
We now have;
x2 - 10x + 16 = 0
x2 - 8x - 2x + 16 = 0
x(x - 8) -2(x - 8) = 0
(x-2) (x-8) = 0
(x-2) = 0
Then x = 2
Or
(x-8) = 0
x = 8
Hence;
x = 2 or x= 8
The jeweler made 7 bracelets and 9 necklaces .
In the question ,
it is given that
amount of gold in each bracelet is
6 grams
amount of gold in each necklace is
24 grams .
let the number of bracelets
"b" .
let the number of necklaces
"n" .
since the total number of necklace and bracelet is 16 .
the equation is b + n = 16
so , b = 16 - n
also given that total gold used is 258 grams .
so the equation is 6b + 24n = 258
Substituting b= 16 - n in the equation ,
we get , 6*(16 - n) + 24n = 258
96 - 6n + 24n = 258
96 + 18n = 258
18n = 258 - 96
18n = 162
n = 162/18
n = 9
and b = 16 - 9 = 7
Therefore , The jeweler made 7 bracelets and 9 necklaces .
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Answer:
I don't understand the question myself