3 years ago

Ten runners are in a race. how many different ways can they finish in 1st, 2nd and 3rd place?

1 answer:

3 0

The order of selection matters, therefore we need to find permutations:
The number of ways is found from 10P3.
$10P3=\frac{10!}{7!}=10\times9\times8=720\ ways$

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jalil and Victoria are each asked to solve the equation ax – c = bx + d for x. Jalil says it is not possible to isolate x becaus

Pie

Answer:

$x = \frac{d+c}{a - b}$

Step-by-step explanation:

Equation: $ax – c = bx + d$

Jalil says it is not possible to isolate x because x has a different unknown coefficient.

Victoria t. Victoria believes there is a solution

Solving the equation:

$ax-c = bx + d$

$ax - bx= d+c$

$(a - b)x = d+c$

$x = \frac{d+c}{a - b}$

So, this shows x can be isolated .

Victoria was right .

It was not possible to isolate x if the coefficients of x would be same .

But in the given equation the coefficients of x are not same .

So, Victoria is right.

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aleksandrvk [35]

Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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3 years ago

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kvasek [131]

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