Answer:
It represents how many bracelets she sold and the profit she makes from it.
Answer:
x + 2y - 18 =0
y = x - 3 is x = 3
Step-by-step explanation:
Find each individual answer and add it together...
18 ones means 18*1=18
15 hundreds means 15*100=1500
15 tens means 15*10=150
8 thousands means 8*1000=8000
Add them...
8000+1500=9500
9500+150=9650
9650+18=<em><u>9668</u></em>
Notice that
y² - 20y + 100 = y² - 2•10y + 10² = (y - 10)²
Then
√(y² - 20y + 100) = y - 10
is equivalent to
√((y - 10)²) = y - 10
|y - 10| = y - 10
If y ≥ 10, then |y - 10| = y - 10, and
y - 10 = y - 10 ⇒ 0 = 0
so there are infinitely many solutions, y ≥ 10.
Otherwise, if y < 10, then |y - 10| = -(y - 10), and
-(y - 10) = y - 10 ⇒ 10 = -10
which is false, so there are no solutions in this case.
The answer is 29 if you put the numbers in for the variables.
