Answer:
6 greeting cards for 23.40
Is the base (leght width) plus the areas of each of the four triangular faces
Hello,
Rational numbers are numbers that can be represented by fractions that consist of integers.
In this case, B. -7/3 is already a fraction that consists of integers, so it is a rational number.
C. square 3 is =

= 9, which can be represented by 9/1, so it is also a rational number.
A and D are incorrect as they cannot be represented by fractions that consist of integers.
The answers are B and C.
Hope this helps!
360 / 20 = <span>18°
i don't know if that is right</span>