Lisa is 10 cm taller than her friend ian. ian is 14 cm taller than jim. every month, their heights increase by 2 cm. in 7 months, the sum of ian's and jim's height will be 170 cm more than lisa's height. how tall is ian now?

Ian is 194 cm tall now

Step-by-step explanation:

Let the height of Jim be x

Now we are given that Ian is 14 cm taller than jim.

So,height of Ian be x+14

Now we are given that Lisa is 10 cm taller than her friend ian.

So, height of Lisa be x+14+10=x+24

Since their heights increase by 2 cm every months

So after 7 months ,

Jim's  height =

Ian's  height=

Lisa's  height=

Now we are given that In 7 months, the sum of ian's and jim's height will be 170 cm more than lisa's height.

So,

So, Ian's height = x+28 =166+28 = 194 cm

Hence  Ian is 194 cm tall now

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

28

step-by-step explanation:

because that's the answer