In any parallelogram ABCD, it is always true that the measures of angleABC and angleBCD: F. Add up to 180 degrees
G. Add up to 90 degrees
H. Are greater than 90 degrees
J. Are each 90 degrees
K. Are each less than 90 degrees.

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

happy to

pls mark as brainliest

c

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.