Answer:
337 reserved seats & 582 general admission seats were sold
Step-by-step explanation:
Let the number of general admission be g, and
the number of reserved seats be r
Since $2 costs general and $4.5 costs reserved and in total $2680.50, we can write an equation as:
2g + 4.5r = 2680.5
Also, in total there are 919 general and reserved seats. Thus, we can write 2nd equation as:
g + r = 919
Rearranging, we get:
g = 919 - r
We put this into first equation (to get all in r) and solve for r first:
And now, since we know g = 919 - r, we have:
g = 919 - r
g = 919 - 337 = 582
Thus, 337 reserved seats & 582 general admission seats were sold
Answer:
Step-by-step explanation:
Let us assume that she makes 10 minutes of call.
Telecorp has a flat rate of 7 cents per minute. If she uses this cell phone service, the amount that she would pay for 10 minutes of call is
0.07 × 10 = $0.7
America's charges 25cents per call. If she uses this cell phone service, the amount that she would pay for 10 minutes of call is $0.25
Phone busters charges 35 cents per call and 2 cents per min. If she uses this cell phone service, the amount that she would pay for 10 minutes of call is
0.35 + 10 × 0.02
= 0.35 + 0.2
= $0.55
The cheapest service is that of America's. Therefore, she should choose it.
R (radius) = 17
diameter is 2r
17(2) = 34
d (diameter) = 34
Answer:
The correct answer is the last on that’s states: it is not a valid sample because it is not a random sample of the population.
Step-by-step explanation:
When a researcher wants to know about the same thing, he/she has to take a sample from the population.
Example, consider a researcher wants to know how many hours the students study at home in a week, so the researcher has to take the sample from the student population.
Here, he/she gives the advertisement and offers $10 for 10 people. Therefore for anyone can come they might not required for a particular study.
Therefore, the answer is the last one.
Given :
A = 25000
P = 20000
r % = 9.6 % = 0.096
n = 12
To Find :
The time taken say t.
Solution :
We know, compound interest is given by :
Taking log both sides :
Hence, this is the required solution.