exam Maths Puzzle Numerical Ability

A triangle plot of land has sides of lengths 130ft, 110ft, and 100ft. Approximate the smallest angle between the sides.

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exam Other Question

Totally lost, help please!!!!

Solve the following system of linear inequalities by graphing. x+2y < 3, 2x - 3y < 6.
Solve, and express you answer in exact form: log(x) + ln(x) = 1