I got <span>≈ 41,000 years. </span> $A = A_{0}*( \frac{1}{2})^(t/t_{\frac{1}{2}) [tex]A= Amount of Substance Left A_{0} = Initial Amount of Substance t = Time Taken t_{\frac{1}{2}} = Half-Life of the Substance$

6 0

3 years ago

What is the fifth term of (x-2y)^7

Vladimir79 [104]

Answer:

560x^3y^4.

Step-by-step explanation:

The (r+1)th term of (a + b)^r = nCr a^(n-r) b^r

We want the fifth term so r = 5 - 1 = 4:

(4 + 1)th term = 7C4 x^(7-4) (-2y)^4

= 35x^3 16y^4

= 560x^3y^4.

3 0

3 years ago

What is b, c, d, e, f, and h?

mina [271]

Answer:

i don't know

Step-by-step explanation:

6 0

3 years ago