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Dinosaurs1842:
hey there
there's no answer option, so I'll just give the answer here
2m+7 = 9
2m = 9-7
2m = 2
m = 2/2 = 1
and the second one is 245 g
do you want the full explanation?
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Answered by
2
Answer:
Let proportionality constant be 'x'
then, weight of copper =13x
and weight of zinc =7x
As per the question
Weight of brass =700 gm
Weight of copper in brass + Weight of zinc in brass =700 gm
⇒13x+7x=700
⇒20x=700
⇒x=35
Hence, Weight of copper in brass =13×35=455 gm
Weight of zinc in brass =7×35
=245 gm
Step-by-step explanation:
PLEASE Mark my answer as brainliest please.
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Step-by-step explanation:
answer of 3) is m=1
answer of 4)is 245gms
please mark me as brainelist
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