Question

please help with inequalities

Answer 1

x+4<7
=> x<7-4
=> x<3
so xwill be less than 3 i.e. 2 :)

Answer 2

i believe that number one is b

Answer 3

because if i remember correctly you'd take x+4<7 and then subtract 4 from 4 and from 7 than you get x<3

Answer 4

i believe so. because you HAVE to have one term on each side of the < symbol. and in order to do that you have to subtract the 4 from both sides

Answer 5

i think number 2 is 8

Answer 6

cause first you do distributive property, and distribute x(7-x) and then you get 8<7x-x than you have to add x to x and to 7 and your left with 8<8x

Answer 7

8<x(7-x)
8<7x-x
+x +x
8<8x

Answer 8

@AnthonyAnthony Actually in 1: x comes less than 3. so x should be 2 , isn't it?

Answer 9

Nope. i can see how you got that confused because of the < sign. but that sign doesn't make a difference, x<3 is the same as saying x=3.

Answer 10

in 2: yeah it should come 8 , by my openion. see
8<x(7-x)
=> 8<7x-x^2
Now it is quadretic inequality. Solve it.

Answer 11

@AnthonyAnthony Hmmm :p

Answer 12

no.1 is B

Answer 13

No Prob (: