A radioactive substance decays according to A = Age-0.0005t, where A, is the initial amount and t is the time in years. If A, = 380 grams, find the time for the radioactive substance to decay to 254 grams. Round your answer to two decimal places, if necessary.

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

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g = (2, 2)

step-by-step explanation:

given the ratio is 1 : 1 then f is the midpoint of eg

let the coordinates of g = (x, y)

using the midpoint formula

(0 + x) = 1 ( multiply both sides by 2 )

0 + x = 2 ⇒ x = 2

similarly

(4 + y) = 3 ( multiply both sides by 2 )

4 + y = 6 ( subtract 4 from both sides )

y = 2

coordinates of g = (2, 2)

900 degrees

step-by-step explanation: