Since U is a universal set where S is its subset, then set U should consist of all the letters, numbers and punctuation mark in a keyboard. In other words, universal set U consists of the following elements:
U = (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
U = (x| x comprised of all the letters in the alphabet fro a to z)
U = (!,.,,,?,!:,;,",',-)
Answer: The number of $12 tickets and $15 sold are 120 and 180 respectively.
Step-by-step explanation:
The given equation is:
12x + 15y = 4140 .....(1)
Where,
x stands for $12 tickets and y stands for $15 tickets
According to the question:
x + y = 300 ....(2)
Now solving equation 1 and 2.
From equation 2:
x = 300 - y
Now putting this expression in equation 1.
12x + 15y = 4140
12(300 - y) + 15y = 4140
3600 - 12y + 15y = 4140
3600 + 3y = 4140
3y = 4140 - 3600
3y = 540
y = 180
And,
x = 300 - y = 300 - 180 = 120
The number of $12 tickets sold = x = 120
The number of $15 tickets sold = y = 180
Thus, the number of $12 tickets and $15 sold are 120 and 180 respectively.
<span>A water tank is 1/8 full. The tank is 3/4 full when 42 gallons are added to the tank. How much water was originally in the tank? (I rewrote it, your wording was messed up)
3/4 = 6/8
1/8 + 6/8 = 7/8 = 42 gallons
42 divided by 8 = 5 1/4
So, the answer is 5 1/4. The tank originally 5.25 gallons of water.</span>
Answer:

Step-by-step explanation:
Area Of Triangle

h = 33in.
b = 45 in.


Answer:
y+4 = -1/6(x-9) point slope
y = -1/6x -2.5 slope intercept
Step-by-step explanation:
The point slope form is
y-y1 = m(x-x1)
where m is the slope and (x1,y1) is the point
y- -4 = -1/6(x-9)
y+4 = -1/6(x-9)
Distribute to get to slope intercept form
y+4 = -1/6x +9/6
y+4 = -1/6x +3/2
Subtract 4 from each side
y+4-4 = -1/6x +3/2 -4
y = -1/6x +3/2 -8/2
y = -1/6x -5/2
y = -1/6x -2.5