Answer:
35n - 63
Step-by-step explanation:
The area of a rectangle is given by
A = l*w where l is the length and w is the width
A = 7(5n-9)
Distribute
A = 35n - 63
3 new seats per row, 15 rows.
3*15=45
45 new seats.
1 seat costs 74$.
74*45=3330
<span>The total cost of the seats is 3330$</span>
Answer:
here is the answer hope you understood it!
Step-by-step explanation:
Answer:
The intensity becomes one fourth when the distance is doubled.
Step-by-step explanation:
The statement is
Intensity of light varies inversly as the square of the distance
So we get
Now for distance 12in let the intensity be
So we get
...(1)
For distance 24in, let the intensity be
We get
....(2)
Dividing (1) by (2) we get
Hence the intensity becomes one fourth