carleenespriu

17.10.2019 • 

Mathematics

Jason had $32. he spent all the money on buying 4 cds for $x each and 2 magazines for $y each. if jason would have bought 5 cds and 2 magazines, he would have run short of $4.

a student concluded that the price of each cd is $5 and the price of each magazine is $6. which statement best justifies whether the student's conclusion is correct or incorrect? a. the student's conclusion is incorrect because the solution to the system of equations 4x + 2y = 4 and 5x + 2y = 36 is (9, 4).

b. the student's conclusion is incorrect because the solution to the system of equations 4x + 2y = 32 and 5x + 2y = 36 is (4, 8).

c. the student's conclusion is correct because the solution to the system of equations 4x + 2y = 4 and 5x + 2y = 36 is (5, 6).

d. the student's conclusion is correct because the solution to the system of equations 4x + 2y = 32 and 5x + 2y = 36 is (5, 6).

Ответ:

Hali07

07.01.2022

Mathematics

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. The student's conclusion is incorrect because the solution to the system of equations 4x + 2y = 32 and 5x + 2y = 36 is (4, 8).
B is right option
4x + 2y = 32
5x + 2y = 36 subtracting
-x=-4
x=4
4(4)+2y=32
16+2y=32
2y=16
y=8
hope this helps

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Ответ:

wassupb66

01.08.2021

Mathematics

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First you would divide by 2 in both sides
P/2 = l + w

Then you would subtract w from both sides
P/2 - w = l

This is the easiest method do isolate l

You can also distribute the 2 to ( l + w) first
P= 2l + 2w

Then subtract 2w from both sides
P - 2w = 2l

Then you would divide by 2
(P - 2w) / 2 = l
P/2 - w = l

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