exam Maths Puzzle Numerical Ability

find the distance betweem (-6,10) and (3,-2)

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exam Other Question

simplify:

a^4 times a^6 divided by -a^3

thanks IF IT TAKES SALLY 4 HOURS TO PAINT A HOUSE AND IT TAKES JOHN 6 HOURS TO PAINT THE SAME HOUSE, HOW LONG WOULD IT TAKE THEM TO PAINT THE SAME HOUSE TOGETHER.

ANSWER: 2 HOURS AND 24 MINUTES