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4 years ago

What is 6P6 ? 36 46,656 720 1

Mathematics

1 answer:

harina [27]4 years ago

6 0

9514 1404 393

Answer:

6P6 = 720

Step-by-step explanation:

The notation nPk is shorthand for ...

n!/(n-k)!

So your expression

6P6 = 6!/(6-6)! = 6!/0! = 720/1 = 720

_____

The ! is pronounced "factorial." The factorial of a positive integer is the product of that integer and every smaller positive integer. 0! is defined as 1.

6! = 6·5·4·3·2·1 = 720

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Factorize (2a-b)^2 -4(2a-b) -13

SpyIntel [72]

Answer:

Hello!

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(2a-b)^2 -4(2a-b) -13 =

$v = 4a^{2} - 4ab + b^{2} - 8a +4b - 13$

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Step-by-step explanation: All you have to do is Factor the polynomial.

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6 0

3 years ago

A machine uses gasoline at a rate of 1/5 gallon an hour. So far 9/10 of a gallon has been used. How many hours has the machine o

uysha [10]

The machine was operated for 4.5 hours

A machine uses gasoline at a rate of 1/5 gallon per hour

The number of hours it will take the machine to use 9/10 gallon can be calculated as follows

1/5 = 1

9/10= x

cross multiply

1/5x= 9/10

0.2x= 0.9

x= 0.9/0.2

x= 4.5

Hence the machine was operated for 4.5 hours

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3 0

1 year ago

8 tenths and 7 hunderths can be regrouped as what?

Fittoniya [83]

Answer:

Step-by-step explanation:

8 0

4 years ago

Please help. Question listed below

solmaris [256]

Answer:

$f^{-1}$ (x) = ( $\frac{9x-1}{8}$ )²

Step-by-step explanation:

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y = $\frac{8\sqrt{x} +1}{9}$

Solve equation for x

8√x + 1 = 9y

8√x = 9y - 1

√x = $\frac{9y-1}{8}$

(√x)² = ( $\frac{9y-1}{8}$ )²

x = ( $\frac{9y-1}{8}$ )²

Switch "x" and "y"

y = ( $\frac{9x-1}{8}$ )²

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5 0

3 years ago

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Ray Of Light [21]

Answer: ill try looking this one up to help u just add me on snap its johni_spurgeon

Step-by-step explanation:

6 0

3 years ago