3 years ago

I NEED HELP ON THIS MATH PROBLEM

Mathematics

2 answers:

CaHeK987 [17]3 years ago

6 0

Answer:

Step-by-step explanation:

y=6x-11

y=6*5-11

y=30-11

y=19

CHECK:

19=6*5-11

19=30-11

19=19

CaHeK987 [17]3 years ago

5 0

X=2 because if you substitute y for 5 and solve you get this answe

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I have got this answered this but instructor give me comments of wrong answers

Sergio039 [100]

Answer:

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Step-by-step explanation:

Convert all the lengths to feet round them to tenths then multiply them.

The answer you have got should be also correct as you have multiplied all the lengths then converted to cubic feet. Since your instructor has said that this is wrong this seems to be the only option remaining.

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4 years ago

use the elimination method to solve the system of equations. choose the correct ordered pairs 7x+3y=30 and -2+3y=3

Mariulka [41]

7x + 3y = 30
-2x + 3y = 3....multiply by -1
-----------------
7x + 3y = 30
2x- 3y = -3 (result of multiplying by -1)
----------------add
9x = 27
x = 27/9
x = 3

7x + 3y = 30
7(3) + 3y = 30
21 + 3y = 30
3y = 30 - 21
3y = 9
y = 9/3
y = 3

solution is (3,3)

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3 years ago