Answer:
1,260 mg of copper.
Step-by-step explanation:
This is because in a 3 to 1 ratio, the first number has to be 3 times the second number which is just multiplied by one. since zinc is the second number, it stays the same but the copper as to be 3 times the amount of zinc so 420 mg times 3 which equals 1,260.
I bealive it is b. ( I had the exact same 7 th grade homework page ad u today;)
Answer:
Yes, It is!
Step-by-step explanation:
The answer is D because, if one of the sides is congruent that means that one side has to mirror the other therefore they can never touch
