0.9x+8≤7x-5 (simplify your answer; type an inequality symbol then type an integer or fraction

Question

anonymous · Answer

7x-0.9x>=8+5
6.1x>=13
x>=13/6.1

use calculator to find the final answer...

anonymous · Answer

-6.1x ≤ -13
6.1x >= 13
x >= 130/61

anonymous · Answer

ok with that rachel

anonymous · Answer

let me check it.

anonymous · Answer

it says it is wrong.

anonymous · Answer

maybe decimal version?

anonymous · Answer

well 130 / 61 = 2/1311 correct to 4 dec places

anonymous · Answer

2.1311

anonymous · Answer

it says the correct answer is ≥16.25

anonymous · Answer

what???? i'll check that out

anonymous · Answer

k

anonymous · Answer

thats wrong rachel - try substituting 2.5 into the original expression
we get 0.9(2.5) + 8 = 10.25 (LHS)
and on RHS 7(2.5) - 5 = 12.5
10.5 < 12.5  - so that fits
and if u plug in 2.311 they two sides are equal

so our result is correct

anonymous · Answer

well thank you, just unfortunately its the schools website if they say it's wrong it's wrong. I do thakn you for your help though.

anonymous · Answer

yw -  books websites, teachers - they all make mistakes sometimes - they certainly are wrong this time