6/10 and 12/20 are both equivalent to 3/5
Answer:
The jar of chermical contains 66g of Zinc.
Step-by-step explanation:
The ratio of Zinc to Copper is 3 : 13
A jar of the chemical contains 286g of copper.
Let the mass of the Zinc be xg.
= 
x = 
= 66g
So the jar of chemical contains 66g of Zinc.
Answer:
7 or 8 hours, depending on the answer you're looking for
Step-by-step explanation:
Assuming she wants to make exactly $350, she would need to work for 7 hours making the larger arrangements.
If she works for 8 hours, she can make the most money making the larger arrangements {$400}
(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥
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Answer:
x=2.5 or x=-4
Step-by-step explanation:
factorisation= factors:1, 2, 4, 5, 10, 20 (only the positive factors)
We will use the factors 4 and 5.
=(2x-5)(x+4)=0
2x-5=0 || x+4=0
2x=+5 || x=-4
x=2.5 or x=-4
