12%=(3+10%*x)/(20+x)
x=30
add 30 pounds of the second alloy
Answer:
Step-by-step explanation:
y=mx+b where m=slope and b=y-intercept
Every triangle angles add up to 180.
So because one angle is 90 degrees you would subtract it from 180 to get 90 and then divide it by two which is 45 degrees.
Hope this helps, have a nice day! :)
I believe it’s 12. But I’m not sure
option D none of the above
