Answer:
Its A x - 55 = 39
Step-by-step explanation:
x - 55 = 39
x = 39 + 55
x = 94
This is correct as they sold 39 and kept 55
This means they had 94 to begin with.
I hope this helps ^_^
So for this you will be doing proportions, and in this case the equation will be 
Firstly, you will cross multiply. Your equation should look like this: 
After that, just divide 24 on each side and your answer will be 
In short, she can wrap 72 presents in 15 hours.
Answer:
B. 36°
Step-by-step explanation:
Dilation does not change the angle measures or the direction of the lines. Angle F is the same as corresponding angle F'.
In order to subtract fractions, you need the denominators (bottom number) to be the same.
.
Answer: the number of years is 7.3 years
Step-by-step explanation:
We would apply the formula for exponential decay which is expressed as
A = P(1 - r)^ t
Where
A represents the population after t years.
t represents the number of years.
P represents the initial population.
r represents rate of growth.
From the information given,
P = 1250
A = 1000
r = 3% = 3/100 = 0.03,
Therefore
1000 = 1250(1 - 0.03)^t
1000/1250 = (0.97)^t
0.8 = 0.97^t
Taking log of both sides, it becomes
Log 0.8 = tLog 0.97
- 0.0969 = - 0.0132t
t = - 0.0969/- 0.0132t
t = 7.3 years
