Answer: B. (4x^2 + 20x)/(6x^2+x-2)
Division is the opposite of multiplication, so you just take 4x and multiply by x + 5, over 2x - 1 times 3x + 2, which is B.
(126) times (1/2 to the x/11 power) = 15% times 126
(1/2) to the x/11 power = 0.15
Take the log of both sides :
(x/11) times log(1/2) = log(0.15)
Multiply both sides by 11 :
'x' times log(1/2) = 11 x log(0.15)
Divide both sides by " log(1/2) " :
x = 11 x log(0.15)/log(1/2) = <em><u>30.107 years</u></em> (rounded)
That's the time it takes for <em><u>any-size</u></em> sample of this substance
to decay to 15% of its original size.
Numbers that are close in value to the actual numbers.
Answer:
- A-B=7x-3x+10-4x²-66+4
- 4x-52-4x²
hope it helps
stay safe healthy and happy.
Answer:
Step-by-step explanation:
Distribute negative sign.
Combine like terms.
