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Mazyrski [523]
3 years ago
6

A Sprinter sprints at 8.0m/s. A cyclist rides at 20km/h. Who is faster? Show your workings clearly.​

Mathematics
1 answer:
Nina [5.8K]3 years ago
5 0

Answer:

The sprinter

Step-by-step explanation:

Change cyclist to same units as sprinter (m/s)

20 km = 20x1000 m = 20000 m

1 hour = 60 minutes = 60 x 60 = 3600 sec

So 20 km/hr = 20,000 m / 3600 sec = 5.6 m/s

The sprinter is faster as he travels at 8 m/s.

(Similarly if you change the sprinter's speed into km/hr

you should get 28.8 km/hr)

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What is 39/69 in simplest form?
wariber [46]
39/69 = 13/23 is in simplest form

First you do 39 divide by 3 = 13 and do 69 divid by 3 = 23


8 0
4 years ago
-x + 48 = 17 what os the value of x
strojnjashka [21]

Answer:

x=31

Step-by-step explanation:

we need to isolate x so we put 48 t the other side to make -x=17-48

we do 17-48 =-31 so -x=-31

x=31

4 0
3 years ago
Antonio is a freelance computer programer. In his work , he often uses the power of 2^n to find the number of ways bits (or unit
valentina_108 [34]
Answer: 2^{n} -1

Justification:

As told in the statement, n stands for the number of bits, and  2^{n} is the highest number of ways n bits can be arranged in the system.

Now, Antonio wants to show that the character can collect one less key than that. So, that number is 2^{n} less 1, which is what the formula 2^{n} - 1 states.


4 0
4 years ago
If a1 = 5 and 5 and an = -3an-1 then find the value of a5. WILL GET BRAINLIEST ​
Shtirlitz [24]

Answer:

<u>405</u>

Step-by-step explanation:

<u>Given</u>

  • a₁ = 5
  • aₙ = -3aₙ₋₁

<u>Solving</u>

  • a₂ = -3a₁ = -3(5) = -15
  • a₃ = -3a₂ = -3(-15) = 45
  • a₄ = -3a₃ = -3(45) = -135
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8 0
3 years ago
Read 2 more answers
Plz help :)))))))))))
dusya [7]

Given:

b1 = 17 ft

b2 = 20 ft

h = 13 ft

r = 17/2 = 8.5 ft


Area of the Semi-circle = 1/2 π r²

= 1/2 (22/7) (8.5²)

= (11/7) (72.25)

= 113.535 ft²


Area of the trapezium = (h) (b1 + b2) / 2

= (13)(17 + 20)/2

= 240.5 ft²


Total area of the amphitheater stage = Area of Semi-circle + Area of the trazezium = 113.535 + 240.5 = 354.035 ft²

5 0
3 years ago
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