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

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.