1.434 billion in scientific notation

1.434 * 10^9.

Step-by-step explanation:

1 billion = 10^9 in scientific notation.

so 1.434 billion = 1.434 * 10^9.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk