B) 20 Multiplied by 15 multiplied by 9 is equal to 2,700cm cubed
Answer:
$1.5 and $8.75
Step-by-step explanation:
Given data
let tables be x and chairs be y
The total cost to rent 3 chairs and 2 tables is $22
so
3x+2y=22----------1
The total cost to rent 5 chairs and 6 tables is $60
so
5x+6y=60---------2
the system of equation is
3x+2y=22----------1X 6
5x+6y=60---------2X 2
18x+12y= 132
- 10x+12y=120
8x+0y= 12
8x= 12
divide both sides by 8
x= 12/8
x=$1.5
put x= 1.5 in 2
5(1.5)+6y=60---------2
7.5+6y=60
6y=60-7.5
6y=52.5
divide both sides by 6
y= 52.5/6
y=$8.75
9. X=7. 7-8=-1
8. X=18. 18-7=11
You use the butterfly method:
360 24
___ ___
X 100
multiply 360 by 100 to get 36000
then divide by 24 to get 1500
Let's see if we can find a pattern:
Row number 1 has 
seats
Row number 2 has 
seats
Row number 3 has 
seats
Row number 4 has 
seats
Can you see the pattern? After 
rows, we have added 
seats.
So, the 60th row will have
