<span>copper +copper = copper
0.14x+0.24(100-x) = 0.20*100 = 20</span>
Answer:
In the tenths spot
Step-by-step explanation:
How to do the vertex is using the formula -b/2a
your a=-9 and b is -18 but it going to become +18 because you are multiplying the -(-18) which there a 1 in front the neg. you going to multiply the -9 by 2 and do 18/18 so your x= -1. You got your x, you going to put in the equation as y=-9(-1)^2-18(-1)-1 then you got your y... hope this is helpful :)
Answer:
13
Step-by-step explanation:
You find out what is one percent then multiply from there
