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bija089 [108]
3 years ago
13

Solve this simultaneous equation? 4x + y = 25 x - 3y = 16

Mathematics
1 answer:
Savatey [412]3 years ago
5 0
X-3y=16 -> x=16+3y Put this x into the first equation -> 4(16+3y) +y=25 -> 64+12y+y=25 -> 13y=25-64 -> y= -3 Put this y into first or second equation ( it's up to you :) X-3y=16 -> x-3(-3)=16 -> x+9=16 -> x = 7 --->> (7;-3) Good Luck
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Nathaniel builds birds and birdhouses using Lego blocks. Let BBB represent the number of birds and HHH represent the number of b
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Answer:

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Step-by-step explanation:

Given that:

43B+215H \leq 3000

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Nathaniel wants to build 50 birds(B) using lego Blocks, we want to determine how many birdhouses(H) he can build with the remaining Lego blocks.

If B=50

43(50)+215H \leq 3000\\2150+215H \leq 3000\\\text{Subtract 2150 from both sides}\\215H \leq 3000-2150\\215H \leq 850\\\text{Divide both sides by 215}\\H  \leq 3.95

Therefore, Nathaniel can build at most 3 Birdhouses.

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