A rectangle has a circumference of 40 cm. If you increase the width by 2 cm and shorten the length by 3 cm, the area will be 1 cm2 smaller. Calculate the original area.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

answer: 1inch=7days  

12inch=12*7=84days

step-by-step explanation: