46.2. 15.4 is one third of 46.2, therefore when you multiply it ny three, you get 46.2. All the problem is, is multiplying the input by 3.
4x+y=-9
4(k)+3=-9
4k=-12
k=-3
Answer:
can't see the answers but I think it's 2.5
Distributive property goes like this:
a(b+c)=ab+ac
10.
I'll distribute each seperatly then group
2(x+3)=2(x)+2(3)=2x+6
4(x-2)=4(x)+4(-2)=4x-8
2x+6+4x-8=6x-2
11.
4(3x²-1)=4(3x²)+4(-1)=12x²-4
5(2x+2)=5(2x)+5(2)=10x+10
12x²-4+10x+10=12x²+10x+6
12.
4(2x-8)=4(2x)+4(-8)=8x-32
-(x-4)=-1(x-4)=-1(x)-1(-4)=-x+4
8x-32-x+4=7x-28