You take a 4" high by 6" wide photo. You like it so much that you enlarge it to a 123" wide poster. How tall must the poster be?
1 answer:
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Answer:
5 units
Step-by-step explanation:
Step one:
Given data
Le the first number be x
and the second number be y
So
x*y= 10-----------------1
and
x+y= 7-----------------2
from eqn 1
x= 10/y
put x= 10/y in eqn 2
cross multiply we have
rearrange
the factors of the quadratic expression are
-5 and -2
The longest side is 5 units