What is the gradient of a line perpendicular to a line with a gradient of ½
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In angle pqr find the measure of

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$