Answer: the speed of the submarine is 5miles per hour
Step-by-step explanation:
The submarine left Hawaii two hours before the aircraft carrier.
Let x = the speed of the submarine
The aircraft carrier traveled at 25 mph for nine hours.
After this time the vessels were 280 miles apart. This means that when they became 280 miles apart, the aircraft carrier has travelled for 9 hours. If the submarine was ahead of the aircraft carrier with 2 hours, that means that the submarine travelled 9 + 2 = 11 hours
Distance travelled = speed × time
Distance travelled by submarine will be 11 × x = 11x miles per hour
Distance travelled by aircraft carrier will be 25 × 9 = 225 miles per hour
If they are 280 miles apart, this would be their total distance. Therefore,
225 + 11x = 280
11x = 280 - 225 = 55
x = 55/11 = 5miles per hour
Answer: 4 hours and 48 minutes
Step-by-step explanation:
120 miles divided by 25 mph
= 4.8
= 4 hours
0.8 x 60
= 48 mins
0 x 60 = 0
Answer:
x=8
Step-by-step explanation:
first factor what two numbers multiply to 64 and add up to -16
-8 and-8
(x-8)^2=0
x=8
Answer:
The actual width is 26 feet.
Step-by-step explanation:
Elise made a scale drawing of a shopping center. The scale of the drawing was 1.5 inches : 3 feet = 1.5 inches : 36 inches = 1 : 24.
Now, in the drawing, a bakery in the shopping center is 13 inches wide.
Therefore, the actual width of the bakery in the shopping center will be the increased value of 13 inches in the ratio 1 : 24.
So, the actual width is (13 × 24) inches = 312 inches i.e. 26 feet. (Answer)