exam
Maths Puzzle
Numerical Ability
Find the half-life of a radioactive substance that is reduced by 30% in 20 hours
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exam Other Question
use the properties for radicals to simplify each of the following expressions. Assume that all variables represent positive real numbers.
1) the square root of 5/3
2) the square root of 12x^3/5
Please help and solve this graph for me. y=-x^2-2x
x;-3 -2 -1 0 1
y;