7. solve.this problem for me please?

Question

5/4(3x-1/2)-2/3<7/3

use set builder notation to describe the complete solution set.{x|x__ __}

10.solve by the elimination method.

x+2y=21

-x+4y=21

what is the solution of the system?

11. solve by the substitution method.

2x+8y=56

-2x+y=16

what is the solution of the system?

13. solve.

4x+18=>6 and 2x-13=>-9 the solution is {x|x>=_?}

15. solve by the elimination method.

3x-6y=5

3x-6y=6

what is the solution of the system?

16. solve

4y-3<7y-4

use the set builder notation to describe the complete solution. {y|y__ __?}

Como · Accepted Answer

You say "Solve this problem" but there are SIX problems !

QU 1

(5/4) [ 3x - 1/2 ] - 2/3 < 7/3

15 [ 3x - 1/2 ] - 8 < 28

45 x - 15/2 - 8 < 28

45 x < 87/2

x < 87 / 90

x < 29 / 30

QU 2

6y = 42

y = 7

x + 14 = 21

x = 7

x = 7 , y = 7 

Qu 3

2x+8y=56
-2x+y=16

9y = 72
y = 8

2x + 64 = 66

x = 1

x = 1 , y = 8


QU 4

4x+18 ≥ 6 and 2x-13 ≥ - 9 

4x ≥ - 12

x ≥ - 3

2x ≥ 4

x ≥ 2

sol set = { x : x ≥ 2 ,  x Є R }

Qu 5

3x-6y=5
3x-6y=6

In 1 line 3x + y = 5 but in the next line 3x - 6 = 6

NO SOLUTION

Qu 6

1 < 3 y

y < 1/3

sol set = { y : y < 1/3 , y Є R }

PS
Thank goodness you didn`t say you had TWO problems !

7. solve.this problem for me please?

1 Antwort