Answer:
200.5 ft
Step-by-step explanation:
You get the area of the wall: 18*12.5=225
You get the area of the door: 7*3.5=24.5
Finally, you subtract the area of the wall from the area of the door and get: 200.5 as your final answer.
Hope this helped!!
36 divide 4 equals 9 i know because 9 times 4 equals 36
9 + 9 + 9 + 9 = 36
Answer:
6
Step-by-step explanation:
Let
. We know the formula for the sum of an arithmetic sequence is:
![S_{n} = \frac{n(a_{1}+a_{n} )}{2}](https://tex.z-dn.net/?f=S_%7Bn%7D%20%3D%20%5Cfrac%7Bn%28a_%7B1%7D%2Ba_%7Bn%7D%20%29%7D%7B2%7D)
Where n is the number term you are finding the sum up to, a1 is the first term, and an is the nth term. We can substitute what we have:
![320=\frac{10(5 + n)}{2}](https://tex.z-dn.net/?f=320%3D%5Cfrac%7B10%285%20%2B%20n%29%7D%7B2%7D)
![640=10(n+5)\\64=n+5\\n=59](https://tex.z-dn.net/?f=640%3D10%28n%2B5%29%5C%5C64%3Dn%2B5%5C%5Cn%3D59)
The formula to find the nth term of an arithmetic series is:
![a_{n} = a_{1} + (n-1)d](https://tex.z-dn.net/?f=a_%7Bn%7D%20%3D%20a_%7B1%7D%20%2B%20%28n-1%29d)
Where d is the common difference. Again, we can plug in what we have;
![59 = 5 + 9d\\9d = 54\\d = 6](https://tex.z-dn.net/?f=59%20%3D%205%20%2B%209d%5C%5C9d%20%3D%2054%5C%5Cd%20%3D%206)
Answer:
slope = - 50
Step-by-step explanation:
Calculate the slope m using the slope formula
m = ![\frac{y_{2}-y_{1} }{x_{2}-x_{1} }](https://tex.z-dn.net/?f=%5Cfrac%7By_%7B2%7D-y_%7B1%7D%20%20%7D%7Bx_%7B2%7D-x_%7B1%7D%20%20%7D)
with (x₁, y₁ ) = (4, 2400) and (x₂, y₂ ) = (12, 2000) ← 2 points on the line
m =
=
= - 50
Answer:
A
Step-by-step explanation:
The commutative property of addition states changing the order of the numbers doesn't not change the sum. The order changed but the numbers stayed the same and as a result the same.