What is the simplest equivalent form of the expression 18
x
3
y
7
24
x
4
y
5
18
x
3
y
7
24
x
4
y
5
?

9
x
y
2
12
9
x
y
2
12
the fraction with numerator 9 x y squared and denominator 12

9
y
2
12
x
9
y
2
12
x
9
y
2
12
x
9
y
2
12
x

3
x
y
2
4
3
x
y
2
4
3
x
y
2
4
3
x
y
2
4

3

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?