Answer:
960
Step-by-step explanation:
if each triangle is .25 square centimeters, and you can double them up to make a square that is .5 square cm, you only have to find the area of the grid by doing and then multiply it by four to get 960. it gets multiplied by four because if you double up the trianglse, its multipling the ammount used by two, and then you have each is .5 cm, which you can then make into one whole square cm by doubling up again, or just multiply by four.
Answer:
15 pounds
Step-by-step explanation:
there are 16 ounces in one pound
so...
first find the limit in ounces
because there are 16 ounces in every one pound you need to multiply 22 by 16
which is 352
now subtract what you already used
which is 240
now convert to pounds
which is 15
so 15 more pounds
Answer: 41.5 min
Step-by-step explanation:
This problem can be solved with the Radioactive Half Life Formula:
(1)
Where:
is the final amount of the radioactive element
is the initial amount of the radioactive element
is the time elapsed
is the half life of the radioactive element
So, we need to substitute the given values and find from (1):
(2)
(3)
(4)
Applying natural logarithm in both sides:
(5)
(6)
Clearing :
This is the time elapsed