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3 years ago

There are 100 runners entered in a marathon. How many different groups of three runners can finish in first, second, and third?

Mathematics

1 answer:

DIA [1.3K]3 years ago

4 0

Permutations and Every runner except for the one that was 1st could be 2nd hoep this helps

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342% What is the fraction equivalent?

love history [14]

How simplified does the fraction need to be ??

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2 years ago

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Jordan spent 22% of his time doing math homework. If hw spent 11 minutes on his math homework. How many minutes did he spend on

devlian [24]

Answer:

The total minutes he spend on his homework are 50 minutes.

Step-by-step explanation:

It is given that Jordan spent 22% of his time for homework on maths.

It is also given that he spent 11 minutes of time on maths homework.

The above two statements are equal.

Let the total time for homework be "x".

Thus, the equation can be written as,

$(\frac{22}{100})(x) = 11$

$x = (\frac{100}{22})(11) = 50 minutes$

Thus the total minutes he spend on his homework are 50 minutes.

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2 years ago

Find an equation for a line perpendicular to y= 3x – 5 , with a y- intercept of -2

damaskus [11]

Answer:

Since the lines are Perpendicular..

The Product of their Gradients = -1

m'm"=-1

m' from y=3x - 5 is 3

3.m" = -1

m" = -1/3.

Since Intercept on y axis = -2...

That of x at that point is =0

y-y' = m"(x-x")

y-(-2) = -1/3( x - 0)

y+2 = -1/3(x)

Multiplying through by 3

3y + 6 = -x

3y + x = -6. This is your Equation

To verify this.

Let's turn it into the Intercept form which is

x/a + y/b = 1

To get 1 at the right hand side... Divide through by -6

3y/-6 + x/-6 = 1

y/-2 - x/6 = 1

You could see directly below y is its intercept and thats -2

8 0

2 years ago

Is −3 a solution to the equation 3 − 5 = 4+ 2? Explain.

Vesnalui [34]

Answer:

There is no variable so -3 therefore cannot be a solution to this.

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2 years ago

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Can anyone help me plz

emmasim [6.3K]

The most likely answer is A. A number decreased By 7

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2 years ago

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