The total cost of 2 bracelets and 3 necklaces is $15.50.The total cost of 4 bracelets and 1 necklace is $13.50.Let b represent the cost of each bracelet and n represent the cost of each necklace. 2b+3n=15.50 4b+n=13.50

n= -2.5, b=11.5

Step-by-step explanation:

-4b-6n=-31

4b+n=13.50

7n = -17.50

n=-2.5

2b+3(-2.5) =15.50

2b-7.5=15.50

2b= 23

b=11.5

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.