Answer:
the second one dose I believe
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:X=-2
Step-by-step explanation:Distribute 2 into 2x and 2 the subtract positive 2 from negative 2 to get negative 4 divide that by 2x to get x is equal to negative 2
Answer:
90
Step-by-step explanation:
90
Answer:
1
Step-by-step explanation:
Use the coordinates of the points to determine the slope
slope = Δy/Δx = (8-7)/(5-4) = 1
