Answer:
500
Step-by-step explanation:
25 for every dollar
20 dollars
25 times 20 = 500
I think this is right :)
Answer:
$30 per day
Step-by-step explanation:
2,100 divided by 70 is 30
Part A : height and length are the legs we are looking for the hypotenuse
Part B a^2+ b^2 =c^2 Which is 41^2+71.5^2=c^2
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
You will have 1 and 1/18 properly, or 19/18 in an improper fraction.
