Answer:
a, Row 1 = 30 seats
Row 2 = 32 seats
Row 3 = 34 seats
Row 4 = 36 seats
b, n + equidistant number of seats added each row (2) * number of row - 1
c, 58 seats
Step-by-step explanation:
a, Because the seats is increasing by 2 after every row after row 1
Therefore, row 2 = row 1 + 2 = 30+2 = 32 seats
Row 3 = Row 2 + 2 =32+2 =34 seats
Row 4 = Row 3 + 2 = 34 + 2 = 36 seats
b, The explicit rule for the number of seats would be:
Row 1 = n
Row 2 = n + equidistant number of seats added each row (2) * (2-1) = n + 2
Row 3 = n+ equidistant number of seats added each row (2) * (3-1) = n+ 4
Row 4 = n + equidistant number of seats added each row(2) * (4-1) = n+6
etc.....
c, The number of seats in the 15th row would be = number of seat in the first row + equidistant number of seats added each row * 15 - 1 (first row)
= 30 + 2 * 14= 30 + 28 = 58 seats
Hope this help you :3
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Answer:
Mean: 16.
Step-by-step explanation:
—Mean—
13 14 14 16 16 16 16 18 18 19
Simply start by adding the numbers together.
13 + 14 + 14 + 16 + 16 + 16 + 16 + 18 + 18 + 19
= 160.
Then divide it by how many numbers there are. Which is 10.
160 divided by 10 = 16.
—MAD—
Subtract each number by the mean.
|13-16| + |14-16| + |14-16| + |16-16| + |16-16| +|16-16| + |16-16| + |18-16| + |18-16| + |19-16|
Negatives don’t matter, everything should be positive numbers.
3 + 2 + 2 + 0 + 0 + 0 + 0 + 2 + 2 + 3
= 16
16 divided by 16 (amount of numbers).
MAD = 1
–IQR—
Seperate both sides in half.
|13 14 14 16 16| |16 16 18 18 19|
Take the median of each group.
Group 1:
|13 14 (14) 16 16|
This one is 14.
Group 2:
|16 16 (18) 18 19|
This one is 18.
Now take (number from group 2) 18 and subtract by (number from group 1) 14.
18 - 14 = 4
IQR = 4.
Answer:
Check the explanation
Step-by-step explanation:
Using the chain rule: dp/dx=(dp/dt)/(dx/dt).
So, you can calculate dp/dx=2x^(-1/2)=2/√x.
by my original statement (rearranged a little) dx/dt (which is what you're looking for) is equal to (dp/dt)/(dp/dx), so subbing in x=1900 you get 1000√1900/2=21794.495 units/month increase in sales.
