## Helpmepleazz 3 years ago -2/5 x - 9 < 9/10???

1. Helpmepleazz

Can you help me???

2. mth3v4

i might probably get this wrong (i have so many people here to correct me :D) q+12-2(q-22)> 10 2(q-22)+q+12>10+2(q-22) additive inverse q+12> 10+2(q-22) q+22>10+ 2q-44 simplify (34)+ q+22 > 2q-34 +(34) additive inverse q+ 56 > 2q 56> q

3. Helpmepleazz

Umm idk... Can anyone else give there opinion?

4. PaxPolaris

$-\frac25 x - 9 < \frac9{10}$First You want to isolate the monomial with x, so:$\implies -\frac25 x<\frac9{10}+9$ follow so far?

5. PaxPolaris

$9+ \frac9{10}= {99\over10}$$\therefore -\frac25 x<{99 \over 10}$ Next you want to get rid of the co-efficient of x...

6. Helpmepleazz

thanks!

7. mth3v4

lol wrong problem

8. mth3v4

that was for the last post

9. mth3v4

i copy and pasted

10. PaxPolaris

You do that by multiplying both sides by -5/2... Note that when multiplying both sides by a negative number flips the < sign to >$-\frac52 \cdot-\frac25\cdot x>-\frac52\cdot {99 \over 10}$$\implies 1\cdot x>-{99 \over 4}$$\implies x>-24{3 \over 4}$

11. Helpmepleazz

thanks now can u answer this? Starting from 1.5 miles away, a car drives towards a speed checkpoint and then passes it. The car travels at a constant rate of 53 miles per hour. The distance of the car from the checkpoint is given by . At what times is the car 0.1 miles from the checkpoint? Calculate your answer in seconds