Answer:
24 hours
Step-by-step explanation:
One foot is 12 inches. 12÷1/2=24 so it will take 24 hours for the candle to burn down.
Answer: 2 years
Step-by-step explanation:
Two negatives make a positive so, -13 - (-49) equals -13 + 49, or 49-13, they are all the same thing, all equal to 36.
Answer:
55.96 miles
Step-by-step explanation:
Distance = Speed X time
Car first moved east for 1 hr , distance = 40 x 1 = 40 miles
Car then moved north-east for 30 min, distance = 40 x 0.5 = 20 miles
From trigonometry,
sin 45 = ; y = 20 sin 45 ; y= 14.14 miles
cos 45 = ; x = 20 cos 45 ; x = 14.14 miles
using Pythagoras theorem;
= +
= +
= 3131.08
=
z = 55.96 miles