Given :
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 g of an alloy containing 12% copper with 78 g of an alloy containing 92% copper.
To Find :
How many grams of copper are in the resulting mixture what percentage of the resulting mixture is copper.
Solution :
Mass of copper in 50 gm alloy =
.
Mass of copper in 78 gm alloy =
.
Total mass of copper, ( 6 + 76.44 ) gm = 82.44 gram.
Percentage of copper in resulting mixture :

Hence, this is the required solution.
Answer:c
Step-by-step explanation:
It is 9 degrees because at 6am the temperature was -12 degrees and at 10am the temperature was -3 degrees.
Answer:
Step-by-step explanation:
it's about 18, as per the graph
Answer:
2/9
Step-by-step explanation: