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JulsSmile [24]
3 years ago
12

3 times a number xx, subtracted from 1818, is less than -90.?90. Write an inequality for the statement above. Find the solution

set of the inequality. Write the solution using a fraction or integer.
Mathematics
2 answers:
DanielleElmas [232]3 years ago
8 0

Answer:


Step-by-step explanation:

The inequality is

18-3x < -90

The solution set is

x > 36

Evgen [1.6K]3 years ago
5 0

Answer:

The solution set is: x>36

Step-by-step explanation:

We are given that we have to subtract 3 times of some number 'x' from 18 such that the resulting equation is less than -90.

this means that : 18-3x<-90

on solving the inequality by adding 3x on both side and adding 90 on both side we get that

 108<3x

now on dividing both side by 3 we get that

x>36

Hence our solution set is: x>36


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3 years ago
Read 2 more answers
14.What is the solution of the system?
Archy [21]

Answer:

14.  x=-2.5,  y = -7

15.  x=28  y = -20

Step-by-step explanation:

14.  Let's solve this system by elimination.  Multiply the first equation by -1.

-1*(4x-y)= -1*(- 3)

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Then add this to the second equation.

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--------------

2x   = -5


Divide each side by 2

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We still need to find y

-4x+y =3

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Subtract 10 from each side.

y = 3-10

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15.I will again use elimination to solve this system, because using substitution will give me fractions which are harder to work with.   I will elimiate the y variable.  Multiply the first equation by 11

11( 5x+6y)= 11*20

55x+66y = 220

Multiply the second equation by -6

-6(9x+11y)=32*(-6)

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Add the modified equations together.

55x+66y = 220

-54x-66y = -192

---------------------------

x = 28

We still need to solve for y

5x+6y = 20

5*28 + 6y =20

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Subtract 140 from each side

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Divide by 6

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If you found this helpful please give me branliest.

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