5. A box consists of 3 exercise books and 5 workbooks. 2 books are chosen at random from the box with replacement, and another 2 books are chosen at random. (i)Find the probability of choosing two different types of books. (ans 0.5357, PLEASE WRITE OUT SOLUTION thxx)
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Simplify the expression 10/11(22z) + (a+5) -1

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?