Adding and Subtracting Polynomials: Mastery Test Which sum or difference is modeled by the algebra tiles?
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A.
(-x2 - 2x+4)-(x+ 2x+ 1) =-2x2 - 4x+3
B. (x2 - 2x+4)+(+*+- 2x+ 1) = -2x2 - 4x+3
C. (x2 - 2x+4)-(x2 - 2x - 1) = -2x2 - 4x+3
(-x2 - 2x + 4) + (-x2 + 2x + 1) = -2x2 - 4x + 3
D.

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

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

the answer is a. 72. but i cant answer with less than 20 characters so here's some random text talking about it.