B because you hace to multiple
Answer:
11(x+10)=132 x = 2
Step-by-step explanation:
Step 1: Distribute the 11 to the "x" and the "10".
(Equation now becomes 11x + 110 =132)
Step 2: Subtract the "110" over to the "132"
(Equation now becomes 11x=22)
Step 3: Divide the "11" and the "22" --> <u>11</u>x=<u>22</u>
11 11
Answer : <u>x = 2</u>
X=15% alloy
y=8% alloy
x+y=40
y=40-x
0.15x+0.08y=40*0.10
0.15x+0.08(40-x)=40*0.1
times 100 both sides for easy
15x+8(40-x)=400
15x+320-8x=400
7x+320=400
minus 320 from both sides
7x=80
divide both sides by 7
x=80/7
x+y=40
80/7+y=280/7
y=200/7
aprox
x=11.4lb
y=28.6lb
11.4lb of 15%
28.6lb of the 8%
what????
