The expression of the value that has more than its base is letter C
For two complex numbers
and
, the product is
That is, you multiply the moduli and add the arguments. You have
and
, so the product is
Answer:
The correct answer is C (ABE = DBC)
Step-by-step explanation:
This is because opposite angles are congruent to each other.
2x^2 +13x + 6 =
2x^2 + 12x + x + 6 =
2x(x + 6) + 1(x + 6) =
(2x + 1)(x+6)
From the statement you can find the function that represents the percent of strontium-90 that remains after t years of the nuclear accident.
Call P the percent:
---> P = e ^ (- 0.025t)
Now you can also estimate the half-life of the isotope strontium-90:
Call Pi the initial percent and P2 the half percent:
P2 = 0.5 * P initial =>
P2 = 0.5 * Pinitial = Pinitial * e ^ (-0.025 t)
=> 0.5 = e ^ (-0.025t)
=> ln 0.5 = -0.025t
=> t = - ln (0.5) / 0.025
=> t = 27.7 years <----- half-time