Question

the length of a rectangular garden is 7 m greater than the width. The area is 78m2. find the length and width

Answer 1

A=l*w
72=w*(7+w)
72=7w+w^2
w^2+7w-71=0
can you do it from now?

Answer 2

sorry 78

Answer 3

hmm. is that to find both?

Answer 4

A=l*w
78=w*(7+w)
78=7w+w^2
w^2+7w-78=0

Answer 5

factor will find w

Answer 6

im really bad at factoring.

Answer 7

(w+13)(w-6)
w=-13 or w=6 the measure can not negative than width =6 ,
length =6+7=13
check: 13*6 =78

Answer 8

so length is 13 and w is 78??

Answer 9

wait, width is 6

Answer 10

length is 6+7 so its 13

Answer 11

w for width
l for length
width =6
length =13
Area = 6*13=78

Answer 12

length is 6+7 so its 13, yes

Answer 13

ahhhh yes. thaks