exam Maths Puzzle Numerical Ability

For an ellipse with foci (0,+or-1) and a major axis with length 6.
a) Explain in 1-2 sentences how you decide if this ellipse is horizontal or vertical.
b) In 3-4 sentences, e

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exam Other Question

Carol has 18 coins with a total value of $3.45. If the coins are dimes and quaters, how many of each kind are there? Find four consecutive integers such that the sum of the second and the fourth is 17 less than thrice the first.