Answer:
Speed of boat in still water = 15 km/hr
Step-by-step explanation:
Let the speed of the boat in still water = x km/hr
Speed of the stream = 3km/hr
Then effective speed of the boat when travelling upstream = x-3 km/hr
Effective speed of the boat when travelling downstream = x+3 km/hr
Time taken for traveling 36 km downstream = Time taken for traveling 24 km upstream
=>
=>
=>
=>
=>
=> x=15
Answer:
Angle ACD is 68°
Step-by-step explanation:
ABC is 68°
<ABC = <BCD
» But <ACD = ½ × (2 × <BCD)
4400 - 3600 = 800
Decrease = 800 Calories
Original value was 4400 Calories.
Now,
After Rounding off,
Decrease percentage will be 18 %
Answer:
slope == -1
Step-by-step explanation:
y-2 = -(x+1)
; y-2 = -x-1 expanding the bracket
; y = -x-1+2
; y = 1-x
hence slope equals -1