Y= 7x - 7z -9
+9 +9 Y+9+7z /7=x
Y+9 = 7x - 7z
+7z +7z
Y+9+7z = 7x
/7 /7
Answer:
The answer is 
Step-by-step explanation:
Let,
Amount of alloy with 30% silver = x g
Given,
Amount of alloy with 10% silver = 200 g
So, Total Amount of alloy with 24% silver = (x+200) g
Now,

Hope you have understood this....
pls mark my answer as the brainliest
D. 17 inches
To be a triangle, any two sides have to add to be larger than the remaining side. An isosceles triangle has two sides that are the exact same length, which eliminates options B and C. 8 + 8 = 16, which is less than 17, so option A is out, leaving only option D.
Answer:
no
Step-by-step explanation:
cause she will need (4 x 2) X 30