Answer:
42
Step-by-step explanation:
SST = ∑
(
y
−
¯
y
)
² (¯
y = mean of y values)
¯
y = (5+8+14)/3 = 27/3 = 9
∑
(
y
−
¯
y
)
² = (
5
−
9
)
² + (
8
−
9
)
² + (
14
−9
)
²
= ( −
4
)
² + ( −
1
)
² + (
5
)
²
= 16 + 1 + 25
= 42
Answer:
6
Step-by-step explanation:
If minus stands before parenthesis the sign in the parenthesis changes to the opposite
Answer:
x axis
Step-by-step explanation:
TURKEY 0.15xy+20y
GOBBLE 0.20xy+0y
x is the number of texts and y is the number of months
400 texts will need to be sent each month because solving the equation 0.15xy+20y=0.20xy+0y
0.15xy+20y=0.20xy
-0.05xy+20y=0
-0.05xy=-20y
turn -0.05xy into (-y/20)x
(-y/20)x=-20y
((-y/20)x=-20y)/-y/20
x=-20y/-y/20
x=400
TURKEY plan because 0.15(500)y+20y is 95y and 0.20(500)y+0y is 100y, meaning TURKEY would be cheaper.
Answer:
N=28 my friend
Step-by-step explanation:
