Situation: Find the substance's half-life, in days.
Round your answer to the nearest tenth.
A 10 gram sample of a substance that's
used to detect explosives has a k-value
of 0.1353.
Enter the correct answer.
DONE
-kt
N - Noe
No - initial mass (at time t = 0)
N = mass at timet
k = a positive constant that depends on
the substance itself and on the units
used to measure time
t - time, in days

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answers

rauschg

rauschg · hand

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step-by-step explanation:

111

step-by-step explanation:

the 3rd on is correct

step-by-step explanation: