exam Maths Puzzle Numerical Ability

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The daily low temperatures in degrees Fahrenheit for a certain week were -3,1,4,-5,-10. What is the range of low temperatures for that week?

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exam Other Question
the supplement of an angle is equal to one-half of the angle. Find the number of degrees in each angle. can someone help me solve these??? please!!!
sqrt x-5=9 and 3 to the sqrt of x-4-2=10