I believe the answer is 6. Hope this helps
y = 80x - 60
Answer is B. y = 80x - 60
Double check:
When x = 1, y = 80(1) - 20 = 80 -60 = 20
When x = 2, y = 80(2) - 20 = 160 -60 = 100
When x = 3, y = 80(3) - 20 = 240 -60 = 180
When x = 4, y = 80(4) - 20 = 320 -60 = 260
When x = 5, y = 80(5) - 20 = 400 -60 = 340
Answer:
85
Step-by-step explanation:
Write the numbers in order
66, 72, 74, 80, 83, 87, 91, 95, 98, 99
Find the middle number
83 and 87 are in the middle, so find the mean of them. 83+87= 170
170/2 = 85.
Answer:
-2
Step-by-step explanation:
![y = kx + n](https://tex.z-dn.net/?f=y%20%3D%20kx%20%2B%20n)
When you insert the given points you get
![3k + n = 4 \\](https://tex.z-dn.net/?f=3k%20%2B%20n%20%3D%204%20%5C%5C%20)
![7k + n = - 4 \\](https://tex.z-dn.net/?f=7k%20%2B%20n%20%3D%20%20-%204%20%5C%5C%20)
Than you multiply the first one by - 1 and sum it with the second to get rid of n
![4k = - 8 \\ k = - 2](https://tex.z-dn.net/?f=4k%20%3D%20%20-%208%20%5C%5C%20k%20%3D%20%20-%202)
Answer:
The difference between the 4th term of both series is 7
Step-by-step explanation:
The formula for the nth term of an APS is a + (n - 1)×d
The first term of one of the series = -1
The first term of the other of the series = -8
The fourth term of both series is thus;
4th term first series = -1 + (4 - 1)× d = -1 + 3·d
4th term second series = -8 + (4 - 1)× d = -8 + 3·d
The difference between the 4th term of both series = -1 + 3·d - (-8 + 3·d)
-1 + 3·d - (-8 + 3·d) = -1 + 3·d + 8 - 3·d = 8 - 1 = 7
The difference between the 4th term of both series = 7.