Hello from MrBillDoesMath!
Answer: x = 2
Discussion:
As 3*ln(x) = ln (x^3) and 2 ln(4) = ln (4^2) the equation becomes
ln(x^3) + ln(4^2) = log(128) =>
ln (x^3 * 16) = log(128) =>
x^3 ^ 16 = 128 =>
x^3 = 128\16 = 8
If x cubed = 8, the the cube root is 2.
Thank you,
MrB
For these similar figures we can write, ratios of their corresponding sides
GH/EA = JI/EA, because GH=JI
JI/EA = y/HI
9/20.25 = y/5
y=9*5/20.25≈ 2.2
Side BC corresponds to side SP
AD = RQ
CD = PQ
Answer:
B. under root 32 * under root 3 is the right answer