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Romashka [77]
3 years ago
15

Expand (4x-2y)^3 for math final

Mathematics
1 answer:
lisov135 [29]3 years ago
5 0
In general: <span>(a - b)^3 = a^3 - 3 a^2b + 3 a b^2 - b<span>^3
(4x-2y)^3 = </span></span>(4x)^3 - 3 (4x)^2(2y) + 3 (4x) (2y)^2 - (2y)^3
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Step-by-step explanation:

the probability is always the number of desired cases over the number of all possible cases.

in our situation we have 15 cards.

that is the total possible cases when a random card is chosen.

how many desired cases do we have ?

a number NOT a multiple of 5.

how many are there ?

it is easier to say how many numbers there are being a multiple of 5 : 5, 10, 15

so, 3 numbers out of the 15 are multiple of 5.

that means

15 - 3 = 12 numbers of the 15 are NOT multiples of 5.

so, the probability to draw a card that is not a multiple of 5 is

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6 0
2 years ago
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ollegr [7]

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(-16)+5-4-4+10

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4 0
3 years ago
Ugh help again i had to do it again
Liono4ka [1.6K]

Answer:

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X varies directly with y. If x is 16 when y is 20, find x when y is 80.
Taya2010 [7]

Answer:

32

Step-by-step explanation:

16/20 reduces down to 2/5

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Answer:

There are 8 people on the train.

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20 - 15 = 5

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7 0
3 years ago
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