The answer is 4 square root 5 or -4 square root 5
<span>copper +copper = copper
0.14x+0.24(100-x) = 0.20*100 = 20</span>
Answer:
the answer is 2.5 or 2 1/2
hope this helps :)
Im not sure if you need to find the area or de expression of how to find the AREA. but what you do if explain how you can find it by multiplying that will be 4.. and then also 4? Im not sure but you can try
x correct answers
23 - x incorrect answers
82 = 4x + -1(23 - x) = 3x - 23
105 = 5 x
x = 105/5 = 21
21 right 2 wrong 2 unanswered
Check: 4(21) -1(2) = 84-2=82 good
