Answer:
1.66667
Step-by-step explanation:
if 100 seconds would make 1 minute, then a day would be made of 86400/100= 864 minutes and if 100 minutes would make 1 hour, then a day would be made of 864/100=8.64 hours.
Answer + Step-by-step explanation:
<u>the probability that a child will not fall on any given day</u> :
= (63 × 64 + 27 × 88) ÷ 100
= 64.08 %
<u>the probability that a child will fall in dry weather</u> :
= (27 × 12) ÷ 100
= 3.24 %
Answer:
D
Step-by-step explanation:
Finding y int by substituting the points given (say y int is x)
(-9) = 4(-4) + x
(-9) = -16 + x
x = 7
With the y int, you can now write the equation
y = -4x + 7
Answer: Well i mean thats a personal question but tell your teacher that she not being much help.
Step-by-step explanation:
Answer:
Quantity remaining= 27.5 grams
Step-by-step explanation:
If the initial quantity of the radioactive isotope= 220 grams
And for each half life it will reduce to half of its original quantity
For first half life
Quantity= 220/2
Quantity= 110 grams
Now for the second half life , the quantity to work with will be 110 grams
Second half life
Quantity= 110/2
Quantity= 55 grams
For the third half life , the quantity to work with is 55 grams
Third half life
Quantity= 55/2
Quantity= 27.5 grams
So after 3 half life's of this radioactive isotope, the amount remaining out of 220 = 27.5 grams.
Another simple way to do this
Since half life reduce the isotope by half of its original.
The third half life will reduce it by (1/2)^3= 1/8
So the quantity remaining= 1/8*220
Quantity remaining= 27.5 grams
