Cos B = c/a
cosine is adjacent over hypotenuse.
there is an acronym for this: soh-cah-toa
soh: sine is opposite over hypotenuse
cah: cosine is adjacent over hypotenuse
toa: tangent is opposite over adjacent
Where’s the pic i need more info
Is this the same q i just answered
Answer:
The regression equation for the sample is
Y= 0.430x +0.214
Step-by-step explanation:
Using the regression formula;
a= (nSSXY - MX MY)/(nSSX -MX^2)
a= (20×43- 4×6)/(20×98 - (4^2))
a= 836/(1960-16)
a= 836/1944
a= 0.430
X bar= summation x / n =4/20= 0.2
Y bar= summation y / n =6/20 = 0.3
b= y bar - a xbar
b= 0.3 - 0.430(0.2)
b= 0.3- 0.086
b= 0.214
The regression equation
Y= ax + b
Y= 0.430x +0.214
Answer:
2y (x-2) (x^2 +4)
or see below for imaginary factors
Step-by-step explanation:
2x^3 y + 8xy − 4x^2 y − 16y
The greatest common factor is 2y
2y ( x^3 + 4x - 2x^2 -8)
Rearranging the order
2y ( x^3 -2x^2 +4x-8)
Factor by grouping
2y ( x^3 -2x^2 +4x-8)
Taking x^2 from the first group and 4 from the second
2y (x^2 (x-2) + 4(x-2))
Factor out (x-2)
2y (x-2) (x^2 +4)
If you want imaginary factors
continue
2y (x-2) ( x^2 - (2i)^2)
2y ( x-2) ( x-2i) (x+2i)
