Cam is rewriting the expression 4(−2x+3y−2)+8 .

Mathematics

1 answer:

dexar [7]2 years ago

7 0

Answer:

Bro no one knows how to answer that question who gave you this whoever did is mean.

Step-by-step explanation:

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Translate mathematical word sentence into written expression: a/2=9

Burka [1]

Answer:

a/2 = 9

a divided by 2 gives 9.
Half of a is equivalent to 9.

6 0

3 years ago

If you draw four cards at random from a standard deck of 52 cards, what is the probability that all 4 cards have distinct charac

mezya [45]

There are $\binom{52}4$ ways of drawing a 4-card hand, where

$\dbinom nk = \dfrac{n!}{k!(n-k)!}$

is the so-called binomial coefficient.

There are 13 different card values, of which we want the hand to represent 4 values, so there are $\binom{13}4$ ways of meeting this requirement.

For each card value, there are 4 choices of suit, of which we only pick 1, so there are $\binom41$ ways of picking a card of any given value. We draw 4 cards from the deck, so there are $\binom41^4$ possible hands in which each card has a different value.