Given f(x) = x and h(x) = f(x) - 3, how does h(x) compare to f(x)?
1 answer:
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Answer:
33 laps
Step-by-step explanation:
we know that
There are 6.6 laps in a mile
so
using proportion
Find how many laps will you have to make to run 5 miles
so
Let
x ----> the number of laps
Instead of using an = sign we use 
becuase its less than or equal to 100 dollars.
The equation of the line is y=10x+7
sub in 100 for y and the inequallity sign
10x+7100
solve so x is isolated
10x93
x9.3
technically the answer is 9 because you cant buy a fraction of a CD
The equation of the line is y=10x+7
sub in 100 for y and the inequallity sign
10x+7
solve so x is isolated
10x
x
technically the answer is 9 because you cant buy a fraction of a CD
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 =
=
= 600 watts
2. Power =
⇒ 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 =
Energy = Power × time
= 4 × 4
= 16 KWh
The cost of running the fire =
= 8p