Answer:
A -9
Step-by-step explanation:
12%=(3+10%*x)/(20+x)
x=30
add 30 pounds of the second alloy
She bought 4 English books and 2 math books
27 x 4 = 108
23 x 2 = 46
108+46=154
Is there a piece of paper that comes with the questions? Or do I just pick one? If there is a piece of paper attached, please add it to your question. Thank you!
The equation for this is a^2+b^2=c^2 so your equation would be 7^2+20^2=X
So you square the 7 and the 20 then take the square root of X and you get
X=21.19
:)