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first substitute all the values you know into the formula (use brackets to make your work clear)

4(4) + 2(3)

we know that 2 numbers next to eachother means multiply so expan...

If presented with an 'AND' statement, multiply the probabilites of each individual event happening by one another,If rolling a die, what is the probability of landing a 1 AND then a 21/6 * 1/6 therefore p...

Start by factoring out the common term, so in this case a.

a(q - c) = d

Now divide by a on both sides to isolate the (q - c)

(q - c) = d/a

Now ad...