Answer:
50+30z=250+10z
z=10
Step-by-step explanation:
50+30z=250+10z
Substract 50 on both sides
50+30z-50=250+10z-50
Simplify
30z=10z+200
Substract 10z on both sides
30z-10z=10z+200-10z
20z=200
200/20 = 10
Answer z=10
Answer: The density of copper should be the same in a wire as it is in a chunk,
so the answer is 8.9 g/cm3.
Answer:
7 bottles
$10
Step-by-step explanation:
multiply
1/6×42= 7 bottles
5/9×18= $10
Answer:
% increase =
% decrease =
Step-by-step explanation:
Percentage Increase:
Let there be an original number. If it increased to a certain value we can calculate the percentage increase value with the help of following formula:
% increase =
Percentage Decrease:
Let there be an original number. If it decreases to a certain value we can calculate the percentage decrease with the help of following formula:
% decrease =