Answer:
y4 - 8y3 + 8y2 + 2y + 8
—————————————
2y2
Step-by-step explanation:
Step 1 :
4
Simplify ——
y2
Equation at the end of step 1 :
y y 4
(((((y2)+————)-((2•—)•y))+——)-4y)+4
(y2) 4 y2
Step 2 :
y
Simplify —
4
Equation at the end of step 2 :
y y 4
(((((y2)+————)-((2•—)•y))+——)-4y)+4
(y2) 4 y2
Step 3 :
y
Simplify ——
y2
Dividing exponential expressions :
3.1 y1 divided by y2 = y(1 - 2) = y(-1) = 1/y1 = 1/y
Equation at the end of step 3 :
1 y2 4
(((((y2)+—)-——)+——)-4y)+4
y 2 y2
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Answer:
(i) Approximately 3 half lifes
(ii) 
Step-by-step explanation:
(i) ∵ The half life of Radon-222 is approximately 3.8 days,
So, the number of half life in 11.46 days = 
≈ 3
(ii) Since, the half life formula is,
Where,
= initial quantity,
t = number of periods
= half life of the quantity,
Given,
N = 
t = 11.46 days,
Substitute every option by 16: A 45 B. 32 C 30 D 48
Apparently ACD are all multiples of 3, so they all apply
Answer:
y= -2x - 1
Step-by-step explanation:
that is the answer sorry if wrong
