Let t = number of hours
The first candle starts at 8 inches.
It burns at 7/10 inch per hour, so in t hours it burns (7/10)t inches.
After t hours, its length is 8 - (7/10)t
The second candle starts at 6 inches.
It burns at 1/5 inch per hour, so in t hours it burns (1/5)t inches.
After t hours, its length is 6 - (1/5)t
You want the lengths to be equal, so the equation is
8 - (7/10)t = 6 - (1/5)t
Day Sis you
1 -30 20
2 0 40
3 30 60
4 60 80
5 90 100
6 120 120
So day 6.
Yes you are correct that is the answer.
Answer: 131 degrees
Step-by-step explanation:
20y-11+4y+6+7y-7=360
31y-12=360
+12. +12
31y= 372
Divide by 31
Y= 12
BC= 4y+6+7y-7
4(12)+6+7(12)-7
BC= 131
You could continued the same way.
∡KHL≅∡PHN= 38° reason cross-angles which are the same
∡MHN≅∡JHK=62° reason cross-angles
The total sum of all angles is 360°
∡JHP≅∡MHL=x reason cross-angles
2x+(2*62)+(2*38)=360 => 2x+124+76=360 => 2x+200=360 =>
2x=360-200=160 => x=160/2=80°
∡JHP≅∡MHL=80°
Good luck!!!
