3 years ago

Graph the solution to this inequality on the number line. 2x – 6 > -16 and 3x – 10 < 8

Mathematics

1 answer:

dusya [7]3 years ago

7 0

Answer:

2x-6=-16 and 3x- 10=8

Step-by-step explanation:

2x=-16+6 and 3x=8+10

2x=-10 and 3x=18

2x/2=10/2 and 3x/3=18/3

x=5 and X=6

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Solve the system using substitution x+5y=0 3y+2x=-21

Crazy boy [7]

Answer:

$\left \{ {{x = -15} \atop {y=3}} \right.$

Step-by-step explanation:

$\left \{ {{x + 5y = 0} (1) \atop {3y + 2x = -21}(2)} \right. \left \{ {{x = -5y} \atop {3y + 2x = -21}} \right. \left \{ {{x = -5y} \atop {3y + 2*(-5y) = -21}} \right. \left \{ {{x = -5y} \atop {3y - 10y = -21}} \right. \\ \left \{ {{x = -5y } \atop {-7y = -21}} \right. \left \{ {{x = -5y} \atop {y= 3 }} \right. \left \{ {{x = -5 * 3} \atop {y=3}} \right.=> \left \{ {{x=-15} \atop {y=3}} \right.$