Complementary is 90 degrees and supplementary 180 degrees
we know that
triangles BCD and ACE are similar
so, their ratios of sides must be equal
Calculation of y:
we can see that
AC=AB+BC
AC=y+3
CE=CD+DE
CE=4+6
CE=10
now, we can plug values
now, we can solve for y
Calculation of AC:
we know that
AC=y+3
we can plug y
and we get
...................Answer
Favor out a-1 as long as you do it to the whole problem it is now equivalent then just worry about factoring the new product
-1(8x^2+X-9)
(8x+9)((X-1)
8x+9=0
Subtract 9 divide by 8
X=-9/ 8 answer
X-1=0 X=1 answer
The answer is 10 nickels and 13 dimes.
Since 10*5=50
and 13*10=130
They both add you to 180