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Cerrena [4.2K]
4 years ago
8

Fatema loves to run marathons. The last one she participated in took her 2 hours to complete. The year before (2016) , she compl

eted the same marathon in 8/11 of the time and the year before that (2015) she completed it in 9/12 of the time. What year did Fatema run the fastest? JUSTIFY YOUR ANSWER PLEASE I NEED HELP ASAP!
Mathematics
1 answer:
Lelechka [254]4 years ago
3 0
2017 = 2 hrs x 60 mins = 120 mins
2016 = 8/11 x 120 mins = 87.27 mins
2015 = 9/12 x 120 mins = 90 mins

Therefore, Fatema ran the fastest in 2016.
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3 years ago
What is the solution to the system of equations? <br> 2x+4y=12<br> Y=1/2x-3
Anvisha [2.4K]
2x+4y=12 ------>1
y=1/2x-3. ------->2

2 into 1

2x+4(1/2x-3)=12
2x+2x-12=12
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sorry if Im wrong or my is incorrect



7 0
3 years ago
Solve :- Ques 5 ) (a) .
svp [43]

Answer:

Hey There!

Let's solve...

We have

\angle \: odb =  \angle \: cao \\  \\  \angle \: dbo =  \angle \: aco \\  \\

Using AA Criterion of Similarity we have

\triangle \: obd \:  -  \triangle \: oac \\  \\

This implies that

\frac{od}{ob} =  \frac{oa}{oc} \to \frac{6}{3 + 2 } \: or \:  \frac{6}{5} =  \frac{oa}{oc}    \\  \\  \to \: oa =  \frac{6}{5} oc

Now,

ab = ao - bo \\  \\  =  \frac{6}{5}oc - bo =  \frac{6}{5}(od - oc) \\  - bo \\  \\  =  \frac{6}{5}(6 + 4cm) - 5cm \\  \\  = 7cm

Note:Every letters should be in capital, i don't have any option here so i can't do.

<h2>I hope it is helpful to you...</h2><h3>Cheers!_________</h3>
5 0
3 years ago
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