PLZ HELP FIRST CORRECT ANSWER I WILL GIVE BRAINLIEST The mass of a sample of the chemical element einsteinium-253253253 after it is initially measured is represented by the following table:

Time (weeks) Mass (grams)

000 400400400

333 201201201

666 989898

999 505050

121212 242424

151515 121212

Which model for M(t)M(t)M, left parenthesis, t, right parenthesis, the mass of the sample ttt weeks after it's initially measured, best fits the data?

Choose 1

Choose 1

(Choice A)

A

M(t)=400-12\cdot tM(t)=400−12⋅tM, left parenthesis, t, right parenthesis, equals, 400, minus, 12, dot, t

(Choice B)

B

M(t)=400-200\cdot tM(t)=400−200⋅tM, left parenthesis, t, right parenthesis, equals, 400, minus, 200, dot, t

(Choice C)

C

M(t)=400\cdot(0.5)^tM(t)=400⋅(0.5 )

t

M, left parenthesis, t, right parenthesis, equals, 400, dot, left parenthesis, 0, point, 5, right parenthesis, start superscript, t, end superscript

(Choice D)

D

M(t)=400\cdot(0.79)^tM(t)=400⋅(0. 79)

t

M, left parenthesis, t, right parenthesis, equals, 400, dot, left parenthesis, 0, point, 79, right parenthesis, start superscript, t, end superscript

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1

28

step-by-step explanation:

because that's the answer

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the 1789 declaration, together with the 1215 magna carta, the 1689 english bill of rights (1689), the 1776 united states declaration of independence, and the 1789 united states bill of rights, inspired in large part the 1948 united nations universal declaration of human rights