Question

Solve the compound inequality 6b < 42 or 4b + 12 > 8.

b < 6 or b > 5

b < 7 or b > −1

b < 7 or b > 1

b > 6 or b < 5

Answer 1

Having you considered dividing the first by 6 and dividing the second by 4? Your life will be simpler after thaose two things.

Answer 2

what is "first" and second ... ?

Answer 3

lik just show me the way you do it

Answer 4

Read in the order that you typed them:

First: 6b < 42
Second: 4b + 12 > 8

Answer 5

You can do division. Let's see it.

Answer 6

so its : 6b/ 6 and 42/6 ?

Answer 7

Excellent. Now simplify. It should simplify well or I would not have suggested '6'.

Answer 8

b <7 and b+3>2

Answer 9

Very good. One more thing to do. Do you see it?

Answer 10

nop

Answer 11

Notice that we've already eliminated two silly answers from the list.

Subtract 3 in the second and eliminate the last silly answer.

Answer 12

the answer is # 2 right ?

Answer 13

That's it.

All we did in this one was solve both pieces as if they were EQUALITIES. The INequalities don't have to be frightening.

Answer 14

b < 7 or b > −1

Answer 15

1 more question

Answer 16

Solve the compound inequality 9 + 3n 6 or 5n < 25.

n −1 or n < 5

n −5 or n > 5

n −1 or n < 5

n −5 or n > 5

Answer 17

Try 3 and 6, this time. See if you can tell why I picked those and you can pick them by yourself in the future.

Answer 18

Whoops! I meant 3 and 5. Why would I know that I had made an error without ever working out the problem?