The surface area of a triangular pyramid is 80 m2. if the pyramid is enlarged by a scale factor of 2, what is the surface area of the scaled image? 240 m2 640 m2 160 m2 320 m2

If the linear dimensions are enlarged by a scale factor k, the areas are enlarged by a scale factor k^2.

Here, the linear dimensions were enlarged by a factor of 2. Then, the area was enlarged by a factor of 2^2. 2^2 = 4, so multiply the original area by 4 to find the new area.

80 m^2 * 4 = 320 m^2

europa2433

europa2433

step-by-step explanation:

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