b is just a variable, which is just a term for a value that could change. It could be anything
Answer:
It can record 198 mintues on extra-long play
Step-by-step explanation:
The full battery(100%) of the videotape is:
2 hours(120 minutes) on short play
4 hours(240 minutes) on long play
6 hours(360 minutes) on extra long play.
32 minutes on short play
It used 32/120 = 0.2667 of the battery
44 minutes on long play
it used 44/240 = 0.1833 of the battery
Battery used:
0.2667 + 0.1833 = 0.45
Battery remaining
1 - 0.45 = 0.55
Out of 6 hours(360) on long play
0.55*360 = 198
It can record 198 mintues on extra-long play
Answer:
Step-by-step explanation:
im watching blippi
Answer:
Adult tickets cost $80, children ticket cost $40
Step-by-step explanation:
Given data
let the number of adults be x
and the number of children be y
so
x+y= 40-------------1
The adult tickets
cost 14 dollars and the children’s tickets cost 12 dollars.
14x+ 12y= 720-------2
solve 1 and 2
x+y= 40
14x+ 12y= 720
from 1
x= 40-y
put this in 2 in place of x
14(40-y)+12y= 720
560-14y+12y= 720
collect like terms
-2y= 720-560
-2y= 160
y= -160/2
y= -80
put y= 80 in 1
x+80= 40
x= 40-80
x= -40
Hence Adult tickets cost $80, children ticket cost $40
- <em>1</em><em>2</em><em>x</em><em>³</em><em> </em><em>+</em><em> </em><em>1</em><em>0</em><em>x</em>
- <em>3</em><em>-</em><em>s</em><em>i</em><em>n</em><em> </em><em>x</em>
<h2><em>hope </em><em>it</em><em> helps</em><em>!</em></h2>
