Answer:
The answer is 5
Step-by-step explanation:
9x9+81
81/7= 81 over 7, or 11.6
Answer:
rom the relation for linear regression formula, Y = b·X + a, we have ;
For car 1
ΣXY = 102780
(ΣX)² = 36
ΣX = 6
ΣY = 52390
ΣX² = 14
N = 3
b = -1000
a = 19463
Y = -1000×X + 19463
For Car 2
ΣXY = 102539.8
(ΣX)² = 36
ΣX = 6
ΣY = 52346.6
ΣX² = 14
N = 3 .
b = -1076.7
a = 19602
Y = -1076.7×X + 19602
Step-by-step explanation:
part B ^
8:7 boy to girl ratio
8x + 7x = 15x
15x = 195
x = 13
Boys = 8x
8*13 = 104 boys
This is how i worked it out.
Good Luck
