exam Maths Puzzle Numerical Ability

both sides of a parallelogram measure 8cm and 10 cm between them and form an angle of 120 degrees. calculate the lenght of their diagonal

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exam Other Question

1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by

d. For what value is this equation undefined?

2. Biologists want to set up a station to solve the inequality -3<2-5x<12