Answer:
6 begonias
Step-by-step explanation:
If there are twelve flowers in each vase
1st vase=9 daffodils+3 begonias
=12 flowers
2nd vase=twice as many begonias
If the florist put twice as many begonias in the 2nd vase, this could mean she put twice as many begonias in the 1st vase
Which is,
2 × 3 begonias in the 1st vase
=6 begonias
Therefore, second vase consist of 6 begonias and 6 daffodils
20/9 is the answer that I got
Answer:
(-3, 2)
Step-by-step explanation:
T -5,3 is a transformation down 5 and right 3 so you would add/subtract it from (2, -1)
So you do 2 -5 = -3
And -1 +3 = 2
Answer:
The expression that represents the number of days until only 10% remains is T((d) 10 %) =100×.
Step-by-step explanation:
The equation for half life is of the form
A = A₀×.........................................................................(1)
Where
A = Final amount
A₀ = Initial amount
t = Time
h = Half life
For the equation T(d) = 100×2⁽⁻²⁾....................................(2)
We have by comparison with the equation for half life
2 ≡ and and the equation (2) can be written as
Percentage remaining after 2 half lives is
×100=100×
However if the half life of Technetium-99m is 6 hours then we have for one day
×100=100×
Therefore an expression that represents the number of days until only 10% remains is
×100=100× = 10 %
=
= ㏑ = ㏑()
= ×㏑ = ㏑()
= = 3.322
Therefore the expression for the number of days 10 % of Technetium-99m will be remaining is
T((d) 10 %) =100×