For this case we have an equation of the form:
y = A * (b) ^ t
Where,
A: initial amount
b: decrease rate
t: time in years.
Substituting values we have:
7 = A * (0.5) ^ ((1/20) * t)
For t = 45 years we have:
7 = A * (0.5) ^ ((1/20) * 45)
Clearing A:
A = 7 / ((0.5) ^ ((1/20) * 45))
A = 33.3
Answer:
the density of the substance when it was deposited 45 years ago was:
A = 33.3 milligrams per square centimeter
Answer:
If you have exited the country, you most likely took a plane. Therefore yes there is an association between having been on a airplane and visiting another country.
(Also do u go to CCA? Bc I had the same q on my math quiz in Mrs.Pfeiffer's class)
Answer:
y = 4
Step-by-step explanation:
6y + 30 = 54
subtract 30 from each side
6y = 24
divide each side by 6
y = 4
There are 147 chocolates in the jar.
Candies = 9
Chocolates = 7
9 + 7 = 16
Candies = 9/16 = 0.5625 * 100% = 56.25%
Chocolates = 7/16 = 0.4375 * 100% = 43.75%
Total items = 336
Candies = 56.25% * 336 = 189
Chocolates = 43.75% * 336 = 147
Answer:
No its -1
Step-by-step explanation:
x = -1 b/c
9x + 4 = 3x - 2
-3x -4. -3x -4
________________
6x = -6
_________
x= -1
