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2 years ago

Solve the inequality 5(2x+1)<10

Mathematics

2 answers:

Mashcka [7]2 years ago

7 0

Answer:

x<1/2

Step-by-step explanation:

Hope this helps!

nevsk [136]2 years ago

5 0

Answer:

5*(2*x+1)-+10)<0

10x-5=5•2x-1

5•(2x-1)<0

divide both sides by 5

divide both sides by 2

x-1/2<0

add 1/2 on both sides x<1/2

so, x<1/2

Step-by-step explanation:

hope it helps

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Answer:

y = 3

Step-by-step explanation:

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3 years ago

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3 years ago

What is the value of y in this system of equations: 3x + y = 9 y = –4x + 10 ?

Ahat [919]

3x + y = 9 (I)
y = –4x + 10 (II)
------------------------
 $\left \{ {{3x + y = 9 } \atop {y = -4x + 10 }} \right.$

Pass the incognito "4x" to the first term, changing the signal when changing sides.
-------------------------
simplify by (-1)
 $\left \{ {{3x + y = 9.(-1)} \atop {4x + y = 10 }} \right.$ 

-------------------------
 $\left \{ {{- 3x - \diagup\!\!\!\!y =-9} \atop {4x + \diagup\!\!\!\!y = 10}} \right. 
$

-------------------------
 $\left \{ {{- 3x = - 9} \atop {4x = 10}} \right.$ 

-----------
 $\boxed{x = 1}$ 

Substitute in equation (I) to find the value of "Y".

3x + y = 9 (I)
3*(1) + y = 9
3 + y = 9
y = 9 - 3
$\boxed{y = 6}$

Answer:
$\boxed{\boxed{ \left \ {{x=1} \atop {y=6}} \right. }}$

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Solve the inequality 5(2x+1)<10​

Solve the inequality 5(2x+1)<10