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Gnom [1K]
2 years ago
9

Quick only 5 minutes to answer!

Mathematics
2 answers:
GalinKa [24]2 years ago
8 0
About 12 minutes sorry I came up with the best answer I could
garik1379 [7]2 years ago
7 0

Answer:

14 and 2/7 minutes, or 100/7 minutes

Step-by-step explanation:

To begin with, supposed the rate at which Tyler and Kiran are running are variables T and K. We can come up with the equations

30T= 4,200 and

30K= 6,300.

Where 30 is the number of minutes, multiplied by the rate at which they are running to equal the total distance ran. We can isolate the variables by dividing both sides of both equations by 30, resulting in <u>Tyler's</u> speed of 140 meters per minute and <u>Kiran's</u> speed of 210 meters per minute.

We can then plug these values into a final equation where x is the amount of time taken for Kiran to run 1 km more than Tyler

We end up with this: 210x= 140x+1000

Solve first by subtracting 140x from 210x to get 70x, and then divide both sides by 70. This isolates x and you get a <u>final answer of 14 2/7 minutes, or 100/7 minutes</u>

<u></u>

And sorry I couldn't get this to you in the 5 minutes you needed, but I hope this at least helps you understand the concept :')

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Answer:

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Step-by-step explanation:

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6 0
3 years ago
Prove Forall x elementof Z, x^2 - 5x - 1 is odd.
Diano4ka-milaya [45]

Answer with Step-by-step explanation:

Let Z be a set of integers

We have to prove that x^2-5x-1 is odd for all value of x \inZ.

There are two cases

1.When x is an odd integer number

2.when x is even integer number

1.When x is an odd integer  number

When x is positive odd integer

Then x^2  is positive odd number (because square of odd positive number is always positive an odd number )

5x is also odd number

-5x -1 = -even number

Suppose x=3

Then -15-1=-16

Odd number - even number=Odd number

Hence ,x^2-5x-1 is an odd number .

When x is negative odd number

Then  x square is positive odd number  and 5x is negative odd term term

Therefore,odd number + odd number -1=Even  number -1=Odd number

Hence x^2-5x-1 is an odd number.

2.When  x is an even number

When x is positive even number

x square is positive even number  and 5x is positive even number

Even number -Even number -1 =Even number -odd number =Odd number

Suppose x=4

x^2-5x-1=16-20-1=-5=Odd number

When x is negative even number

Then x square is positive even number  and 5x is negative even number

x^2-5x-1=Even number +Even number -1=Even number -1=Odd number

Hence, for all elements of Zx^2-5x-1is odd.

7 0
3 years ago
Can some one help I forgot how to do 0.6 divided by 12.9. Plzzzzz anyone hellppppppp
Katyanochek1 [597]

The answer to your question is 0.046511627906

Explanation:

Simple, use a calculator to answer your question.

3 0
2 years ago
How much money left after spending $8, $7 and $13, then received $10 and spent $15. now $12 is left. how much money did one have
Inessa [10]
$8 + $7 + $13 + 15 = $43
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i am a mathematics teacher. if anything to ask please pm me
4 0
3 years ago
What is the quotient?<br> 5-6/53
madreJ [45]

Answer:

-1/53

Step-by-step explanation:

6 0
3 years ago
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