Answer:
Correct choice is B
Step-by-step explanation:
Let a, b, c and d be the trapezoid's sides lengths.
The perimeter of the trapezoid is the sum of all sides lengths, thus,

If each side length is increased by a factor 7, then new sides have lengths 7a, 7b, 7c and 7d. The perimeter of new trapezoid is

Use the distributive property for this expression:

Since
then

Ik I’m not know help but gee I forgot this just go on google
HELLO DEAR,
GIVEN:-
8cos²x + cosx - 9
8cos²x + 9cosx - 8cosx - 9
cosx(8cosx + 9) - (8cosx + 9)
(cosx - 1)(8cosx + 9)
I HOPE ITS HELP YOU DEAR,
THANKS
Sorry it's wrong the correct answer is 5.
3 5
-- ÷ ----
1 3
cross out the 3's
5
-- ÷ ----
1