Answer:
Step-by-step explanation:do you have the answers to choose from?
Zinc = 7/18
Divide 4.9 by 7 = 0.7
Multiply by 18 = 12.6
The answer is 12.6 lbs of alloy. Sorry if I'm wrong
All it is adding add both of the numbers that are on the top and then do the same
144 degrees, q=s, so 3a=4a-12. a=12, and 12*12= 144
60 degrees since it near a isosceles triangle
