15+17+12= 44
The sold 44 magazine subscriptions in total.
sin (x) = -1
arcsin (-1) = x
x = -90
and multiples of 360
x =-90, 270,....
x =-90 + 360n where n is an integer
or in radians
-pi/2 + 2*pi *n where n is an integer
Answer:
2(W - 5) ≤ -29
Step-by-step explanation:
"Twice the difference of a number and 5 is at most -29" can be expressed symbolically as follows:
2(W - 5) ≤ -29
Further explanations:
"the difference of a number and 5" is W - 5, and thus "Twice the difference of a number and 5" is 2(W - 5).
"x ≤ -29" states "x is at most -29."
THE MULTIPLE OF 3 ARE: 3 , 6 , 9 ,12
The 1st magazine costs either 3 or 6 or 9 , 12
The 2nd magazine costs <span>3 or 6 or 9 , 12
The value 12 is to be discarded , then are the sum of tall possibilities to get 12:
</span>mag 1st mag 2nd total
------------ ------------ --------
3 9 12
6 6 12
9 3 12
