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Sliva [168]
3 years ago
10

The equation p=100−5t represents the percent p of battery power remaining in a tablet after t hours.

Mathematics
1 answer:
puteri [66]3 years ago
7 0

Answer:

20

Step-by-step explanation:If p=100% and t=20% than 5×20=100 because if you add 20 five different times you get 100.

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75 POINTS Need an immediate answer please brainliest will be given! A train left a station travelling to a city at 30 mph. The t
yaroslaw [1]

The value of distance between the station and the city in terms of miles which train and car travelled at interval of 2 hours is 129.6 miles.

<h3>What is the rate of speed?</h3>

The rate of speed is the rate at which the total distance is travelled in the time taken. Rate of speed can be given as,

r=d/t

Here, (d) is the distance travelled by the object and (t) is time taken but the object to cover that distance.

The train traveled 1/3 of the distance at 30 mph and the remaining distance at 40 mph. Let <em>t</em> is the time the train has taken to travel and x is the distance it travelled. Thus,

t=\dfrac{\dfrac{1}{3}x}{30}+\dfrac{\dfrac{2}{3}x}{40}\\t=\dfrac{x}{90}+\dfrac{x}{60}\\t=\dfrac{2x+3x}{180}\\t=\dfrac{5x}{180}\\t=\dfrac{x}{36}

After two hour a car left the same station traveled the first 3 hours at 35 mph and the remaining distance at 51 mph. Let <em>t</em> is the time the car has taken to travel and x is the distance it travelled. Thus,

t+2=3+\dfrac{(x-3\times35)}{51}

As t is same, thus put the value of t in this equation,

\dfrac{x}{36}=3-2+\dfrac{(x-3\times35)}{51}\\\dfrac{x}{36}=3-2+\dfrac{(x-3\times35)}{51}\\\dfrac{x}{36}=1+\dfrac{(x-105)}{51}\\\dfrac{x}{36}=\dfrac{(51+x-105)}{51}\\51x=36x-54\times36\\51x-36x=1944\\x=\dfrac{1944}{15}\\x=129.6

Thus, the value of distance between the station and the city in terms of miles which train and car travelled at interval of 2 hours is 129.6 miles.

Learn more about the rate of speed here:

brainly.com/question/359790

#SPJ1

6 0
2 years ago
The distance from Portland to Seaside is 75 miles what is the distance in inches on the map which scale of 1.25 in:25 mi
jek_recluse [69]

Answer:

1.25in/25mi = x/75mi

25x = 93.75

x = 3.75

<u>3.75 inches</u>

5 0
3 years ago
Please please help I’m begging you to help
Ilia_Sergeevich [38]

Answer:

for every 1 vote cast on candidate d there is 4 votes cast on candidate c.

Step-by-step explanation:

44 divided by 11 is 4

7 0
3 years ago
Read 2 more answers
Suppose that a survey was taken of 320 people and each person was asked if they approved or disapproved of the president's actio
wolverine [178]

Answer: I believe it’s C

Step-by-step explanation: I hope i’m right

6 0
3 years ago
Dwhat fraction is shown on the number line?<br> Please help I need it please thank you
tigry1 [53]
The answer is 3/4! The number line is separated into four parts and it’s on the third line- so 3/4 of an inch!

Please give brainliest!❤️
6 0
3 years ago
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