Ducky_Fresh 3 years ago Desperately need help with algebra! "A laptop advertisement states that internal parts operate at 55° Celsius plus or minus 15°. Write an absolute value equation to represent the situation. Then solve the equation and write it as a compound inequality. State the meaning of the solution."

1. willow

55|-15|

2. Ducky_Fresh

Alright, thanks. How do I solve an absolute value equation?

3. willow

well i'm not perfect at math so i might be wrong, but from what i understand absolute value equations can have 2 answers, because |6| could mean +or-6.. absolute value means it moves in either direction on the number line

4. ganeshie8

$$\pm15$$ degrees is the variation, right ?

5. ganeshie8

first put the equation for variation, next we can account for 55 ok

6. Ducky_Fresh

So 55±15?

7. ganeshie8

call "x" the temperature of internal parts at any given time |x| = 15 but since, the temperature varies around +55, we need to translate the graph to right side : => |x-55| = 15

8. ganeshie8

yep ! 55 $$\pm$$ 15 is correct, but you need to still solve the absolute equation above and write it as compound inequality ! good luck :)

9. Ducky_Fresh

Alright, thanks! The compound inequality would be 40 ≤ x ≤ 70, yes?

10. ganeshie8

thats right !! gw :D

11. Ducky_Fresh

Thank you for the help!