3 years ago

Solve the inequality 38<4x+3+7-3x

Mathematics

1 answer:

Semmy [17]3 years ago

3 0

38<4x + 3 + 7 - 3x

38 - 10 < x

28 < x

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-3x + 4y = 95 <br> x + 5y = 38

NARA [144]

We can solve this by elimination, in order to do this we need to multiply the bottom equation by three to cross out the X

(x+5y=38)3 3x+15y=114

-3x+4y=95
3x+15y=114

then add the two equations together and the X will cancel out

19y=209
----- -----
19 19

y=11

then plug that in into one of the equations

x+55=38
-55 -55

x= -17

your answer is (-17,11)

7 0

3 years ago

Which system of equations is represented by the matrix below?

Charra [1.4K]

Answer:

Step-by-step explanation:

The elements of the matrix need to match the coefficients in the equations.