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Lilit [14]
3 years ago
8

Solve the inequality for x.

Mathematics
2 answers:
ycow [4]3 years ago
6 0

Answer:

the answer is x<30

Step-by-step explanation:

-2x>-64+4

-2x > -60

x < 30

the sign changed because you dived with minus

Lapatulllka [165]3 years ago
5 0

Answer:

the answer is x<30

Step-by-step explanation:

add 4 to both sides

divide both sides by -2

the negative sign changes the sign from > to <

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Step-by-step explanation:

4 0
3 years ago
4x-3y=2<br> 3x=5y=16<br> solve using substitution method
vodomira [7]

\left\{\begin{array}{ccc}4x-3y=2&|\text{add 3y to both sides}\\3x+5y=16\end{array}\right\\\left\{\begin{array}{ccc}4x=3y+2&|\text{divide both sides by 4}\\3x+5y=16\end{array}\right\\\left\{\begin{array}{ccc}x=0.75y+0.5&(*)\\3x+5y=16\end{array}\right\\\\\text{substitute}\ (*)\ \text{to the second equation}\\\\3(0.75y+0.5)+5y=16\qquad\text{use distributive property}\\\\(3)(0.75x)+(3)(0.5)+5y=16\\\\2.25y+1.5+5y=16\qquad\text{subtract 1.5 from both sides}\\\\7.25y=14.5\qquad\text{divide both sides by 7.25}

\boxed{y=2}\\\\\text{substitute the value of y to}\ (*):\\\\x=0.75(2)+0.5\\\\x=1.5+0.5\\\\\boxed{x=2}\\\\Answer:\ x=2\ and\ y=2\to(2,\ 2)

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Jamal factored it completely.

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