<span>first you set up a proportion 18 over ? = 60 over 100 then cross multiply. 18*100=1800 then divide that by 60 and you get 30 :)</span>
Answer:
Yes
Step-by-step explanation:
4 is greater than 0, and 4 is less than 7
Answer:
; 
Step-by-step explanation:
The inequality says the sum of x and 25 (written as x + 25) is less than (<) 75.
The inequality is written as: 
My work for solving the inequality is in the picture.
Swapping rows alters the sign of the determinant:

Multiplying a single row by a scalar scales the determinant by the same amount:

Then

Answer:
(c) Pi/4
Step-by-step explanation:
3pi/4 = (3 x 180) / 4 = 135 degrees
135 degrees is equivalent to (180 degrees - 135 degrees) 45 degrees
45 degrees = Pi/4
Therefore, the reference angle of 3pi/4 is Pi/4
Thus, the correct option is (c) Pi/4