Diamond Layne
Solving Exponential Equations (Level 2)
Mar 25, 11:30:53 PM
Element X decays radioactively with a half life of 10 minutes. If there
are 550 grams of Element X, how long, to the nearest tenth of a
minute, would it take the element to decay to 112 grams?
y = a(.5)

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the answer is 8

step-by-step explanation:

3.14 x 8x8

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

16.80 times .20= 3.36

step-by-step explanation:

inverse operation of addition