1 mile = 5,280 feet:
9 miles x 5280 feet per mile = 47,520 total feet per hour
1 hour = 3600 seconds.
Divide total feet by seconds per hour:
47,520 feet / 3600 seconds per hour = 13.2 feet per second.
Multiply feet per second by number of seconds for distance traveled:
13.2 feet per second x 15 seconds = 198 total feet.
Answer:
The answer is (2, 4)
Step-by-step explanation:
I hope this helps!
Answer:
1. 600 watts
2. 35640 J
3. 55%
4. 20 J
5. The cost of running the fire is 8p.
Step-by-step explanation:
1. Energy = 36 000 J , t = 1 minute = 60 seconds
Power = ![\frac{energy}{time}](https://tex.z-dn.net/?f=%5Cfrac%7Benergy%7D%7Btime%7D)
= ![\frac{36000}{60}](https://tex.z-dn.net/?f=%5Cfrac%7B36000%7D%7B60%7D)
= 600 watts
2. Power = ![\frac{work done}{time}](https://tex.z-dn.net/?f=%5Cfrac%7Bwork%20done%7D%7Btime%7D)
⇒ work done = Power × time
= 99 × 360
= 35640 J
3. Efficiency = (Output / Input) × 100
=
× 100
= 55%
4. Work done = Force × distance
= 5 × 4
= 20 J
5. Given that 1 KWh cost 2p, Power = 4 KW and time = 4 hours.
Power = ![\frac{energy}{time}](https://tex.z-dn.net/?f=%5Cfrac%7Benergy%7D%7Btime%7D)
Energy = Power × time
= 4 × 4
= 16 KWh
The cost of running the fire = ![\frac{16}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B16%7D%7B2%7D)
= 8p
Answer:
1. 80 yd
2. 10 and 10 of the other side
3. yes
Step-by-step explanation:
1. As we were asked to stay 240 feet away, and we will be on a soccer field and it has marked distances in yards we just have to pass our feet to yards.
1 ft = 1/3 yd
240 ft = 240/3 yd
240 ft = 80 yd
2. one would have to stand in yard 10 and the other in yard 10 but from the other side of the field
50-10 = 40
40 + 40 = 80 yd
3.
if they are diagonally the distance will be greater than 80, since the yards are parallel, because only the distance would remain only if they are on the same height
Answer:
Coefficients: 2 4 1 6
(these are the non-variable number but can be followed by a variable. if no number is written before a variable it is an unwritten 1)
Degrees: 9
(this is the sum of all exponents of the variables. If there is no exponent there is (again) an unwritten 1)
Hope this helps