The answer for this question is 8/1
<span>Area of square c2 = -area of square a2 - area of square b2 + area of defect1 * area of defect2</span>
The composite is 4 .
I hope this helps and please mark as branilyest I need 4 more to level up in rank.
Turtle14526
Answer:
(A)129 Pounds
Step-by-step explanation:
Let x be the number of 23% zink alloy
Therefore:
Since the total result is 516 pounds
The number of pounds of 42% zink alloy =516-x pounds
We then have the resulting equation:
0.23x+0.42(516-x)=0.3725*516
0.23x+216.72-0.42x=192.21
Colect like terms
0.23x-0.42x=192.21-216.72
-0.19x=-24.51
Divide both sides by 129
x=129 pounds
Therefore, the number of pounds of 23% zink alloy that must be mixed is 129 pounds.
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