Brass is made up of copper and zinc. every 100 grams of brass contains 20 grams of zinc. a) work out the weight of zinc in 60 grams of brass. brass contains 4 parts by weight of copper to 1 part by weight of zinc. b) work out the weight of copper in 350 grams of brass.

50- 250 is correct i did that one too

step-by-step explanation:

answer: sherk

step-by-step explanation:

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2 equivalent expressions to represent the area of a rectangle and the top is n-3 and the side is 2

area of the rectangle = length * width

given length = n - 3

width = 2

replace it in the area

so area of the rectangle = (n-3) *2

= 2(n-3)

one of the expression is 2(n-3)

to get another expression we distribute 2 inside the parenthesis

2(n-3) is 2n - 6

so another expression is 2n - 6

two equivalent expression are

2(n - 3)   , 2n - 6