X + y = 33
x - y = 9 Add the 2 equations together
---------------
2x = 42 Divide both sides by 2
x = 21
Use the original equation and plug 21 in for x, then solve.
x + y = 33
21 + y = 33
Subtract 21 from both sides
y = 12
One list had 21 items on it and the other list had 12 items on it.
Complete Question
A cylindrical vase has a diameter of 6 inches. At the bottom of the vase, there are 7 marbles, each of diameter 3 inches. The vase is filled with water up to a height of 12 inches.Which of the Following could be used to calculate the volume of water in the vase?
Answer:
Step-by-step explanation:
From the question we are told that:
Diameter of vase 
Number of marbles 
Diameter of marbles 
Height of water 
Generally the equation for Volume of water in cylindrical vase 
is mathematically given by
Where Volume of the balls 
is
Therefore
Answer:
Step-by-step explanation:
5) ∠1
6) ∠2 and ∠3
7) ∠1
He watched 1.1 hours each day during the 5 day period give me brainliest
Answer:
P=6x-3 units
Correct answer: Third option
Step-by-step explanation:
<u>Perimeter of a Triangle
</u>
Given a triangle of sides a,b,c. The perimeter is the sum of its sides, i.e.
P=a+b+c
The triangle shown in the figure has sides of values x+3, 2x-1, 3x-5. The perimeter is
P=x+3+2x-1+ 3x-5
Joining like terms:
P=6x-3 units
Correct answer: Third option
