Answer:
x=20
Step-by-step explanation:
x - 5 = 15
x +5 = +5
x = 20
Notice that 38 and 52 make a total of 90
sinA=cos(90-A)
sin38=cos52, therefore the answer is zero
Answer:
pages
Step-by-step explanation:
Divide the total number of pages by 5 to get how many sets of every 5 pages will contain 2/3 of a page of advertisements.

Multiply this value by
to get the total number of pages.
pages
Ce clasă ești sa văd daca te pot ajuta
Answer:
21
Step-by-step explanation: