2. x=10
Break it into right triangles and solve using sine/cosine/tangent
Hello :
<span>y = –2x + 1 ....(1)
6x + 2y = 22 ....(2)
</span><span>by substitution in (2) : 6x+2(-2x+1) =22
6x-4x+2 = 22
2x =20
x =10
in(1) : y =-2(10)+1 = -19 </span>
Answer:
W + D = 661 cost of pair
W = .61 D cost of washer
1.61 D = 661
D = 413 cost of drier
Check:
W = 413 - .39 * 413 = 252
W + D = 252 + 413 = 665 (within rounding)