Question

Help!

Answer 1

http://prntscr.com/8gix28

Answer 2

plz help! i need a step by step explanation

Answer 3

the area of a rectangle is given by= length x breadth

you are given -
\[area=x^2 +12x\]and \[breadth=x\]

let the length be l

so
\[l \times x =x^2 +12x\] then u take x common in the right hand side

\[l \times x =x(x+12)\]then divide both sides by x\[(l \times x)\div x =x(x+12)\div x\]\[l=x+12 \]

Answer 4

Thank u soo much! can u help me with part b?

Answer 5

http://prntscr.com/8gj1og

Answer 6

so in part b u just have u find the numeric value of l and this time u are given that x=10

up there^ we found out that l=x+12
so jst put x=10 and get-
l=10+12
l=22

Answer 7

thats all we have to do?

Answer 8

yes :)

Answer 9

Thank u! :))

Answer 10

no prblm :D btw sry i replied so late i was chattin down there in the chat boxes :)

Answer 11

its ok :)