Let
be the amount of the 30% alloy and
the amount of the 60% alloy the metalworker will use. However much is used, the final alloy will have a mass of

kilograms. For each kg of the 30% alloy used, 0.3 kg is copper; similary, each kg of the 60% alloy contributes 0.6 kg, so that

Now,






Answer:
3
Step-by-step explanation:
(6a+9)-7b
There are 3 terms
When it is in () it means multiply x=45
Answer is C but if its on grad point your answer is 0.5(2)^x
Answer:
Step-by-step explanation: