Question

Help please

Answer 1

Im going to do this one question, you can post the other in other posts
Solve the compound inequality 30 < 10u < 120.
• 3 < u < 4
• 3 > u > 12
• 3 > u > 4
• 3 < u < 12

To solve:
30 < 10u < 120 First divide by 10, because thats the variable you are trying to isolate
--------------
10

Answer 2

^^@zaynahf is right for the 1st one ju divide both sides by 10 so it would be 30/10 and 120/10 then ju would put it in answer form 30/10<u<120/10 which is = to jur answer lol
for the next one 9 + 3n ≥ 3 or 5n < 30. first for the 9 + 3n >= 3 ju would subtract the 9 on both sides first so it would be 3n >= -6 then ju would divide both sides by 3 to isolate the n all by itself. so it would be n >= -6/3 :P now for the 5n < 30 all ju would do is divide both sides by 5 to be n < 30/5
now that ive helped ju with 2 of them hopefully ju understand it and can try the other 2 by yourself :D hope this helped

Answer 3

and oh don forget when ju divide by a negative ju gotta flip the sign

Answer 4

ookieee

Answer 5

oh and for the last one dont forget to flip the sign because ju are dividing by a negative number! :P