Answer:
See below in bold.
Step-by-step explanation:
The 50 grams of alloy contains 50 * 0.52 = 26 g of pure copper.
So the amount of copper n the mixture = 78 + 26 = 104 g.
The total mass of the mixture = 78 + 50 = 128 g.
% copper = 104 * 100 / 128
= 81.25%.
Answer:
4/3
Step-by-step explanation:
-2 1/3= -7/3
-5=-15/3
Answer:
theres nothing there
Step-by-step explanation:
Answer:
x=4.5
Step-by-step explanation:
so when y=20 and x=2, y is 10 times x so, <u>45/10=4.5</u>
Answer - Yes it’s rational
