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gavmur [86]
3 years ago
9

NEED HELP ASAP PLZ!!!!!

Mathematics
1 answer:
nikdorinn [45]3 years ago
5 0
3/25

4/38=2/19

54/7=7 5/7

48/9=16/3=5 1/3
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1) A cyclist travels a distance of 90 miles in 5 hours. What
Nostrana [21]

Answer:

Step-by-step explanation: <u>Speed</u> is distance an object travelled per unit time.

It is represented by letter v and can assume various units.

1) v=\frac{distance}{time}=\frac{d}{t}

v=\frac{90}{5}

v = 18 miles per hour

Her average speed is 18 mph.

2) Rearraging formula for distance:

d = v.t

d = 70 * 4

d = 280 miles

You would travel 280 miles.

3)  v=\frac{d}{t}

v=\frac{315}{6}

v = 52.5 mph

My average speed is 52.5 mph.

4) Rearranging formula to determine time:

t=\frac{d}{v}

t=\frac{210}{90}

t = 2.34 hours

It will take 2 hours and half to arrive in Leeds. So, we will be expected to arrive at 12:04.

5) The unit change but the way of calculating time is the same.

t=\frac{2000}{4}

t = 500 s

or t = 8.34 minutes

It will take, for an athlete to run 2000m, 8.34 minutes.

6) a) All units must match, so for a speed in mph:

45 minutes is 0.75 hours. Total time is 8.75 hours.

v=\frac{420}{8.75}

v = 560 mph

The average speed is 560 mph.

b) t=\frac{d}{v}

t=\frac{420}{63}

t = 6.67 hours

Sam will take 6.67 hours to covered the distance.

4 0
2 years ago
You need to buy enough sand to fill a sandbox to the top. The sandbox is modeled by the right rectangular prism in the diagram.
kifflom [539]

Answer:80

Step-by-step explanation:

Mutiply all

4 0
3 years ago
How do you solve this
arlik [135]
The answer is 1,800, you would multiply 5 by 10 which is 50 then t would be 50 to the 4th power 50 times 4 is 200. then you do the same on the other side 3 time 10 which is 30 to the second power which is 90 than you multiply 200 and 90 because when you have two parentheses next to each other you always multiply but when you do that your answer turns out to be 1,800 
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3 years ago
Write the standard equation of a circle with center (0,0) and radius 7
lana66690 [7]

Answer:

x^2 + y^2 = 49

Step-by-step explanation:

For center (h,k) and radius r, eqution of the respective circle is

(x-h)^2 + (y-k)^2 = r^2

7 0
3 years ago
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An astronaut who weighed 150 pounds on Earth found that his weight on Jupiter was 400 pounds. He captured an alien that weighed
Andrews [41]
The alien would be about 20 LBS on the earth
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